Mat 19:9 And I say unto you, Whosoever shall put away his wife, except it be for fornication, and shall marry another, committeth adultery: and whoso marrieth her which is put away doth commit adultery.
Mar 10:11 And he saith unto them, Whosoever shall put away his wife, and marry another, committeth adultery against her.
Mar 10:12 And if a woman shall put away her husband, and be married to another, she committeth adultery.
Mat 5:31 It hath been said, Whosoever shall put away his wife, let him give her a writing of divorcement:
Mat 5:32 But I say unto you, That whosoever shall put away his wife, saving for the cause of fornication, causeth her to commit adultery: and whosoever shall marry her that is divorced committeth adultery.
Divorce is not a sin it becomes a sin when people remarry. You can divorce anyone for any reason biblically but you are liable for the fact that they may choose to remarry. Their remarriage would be adultery and you would have a part in it according to Mat 5:32. The person who marries the divorcee also commits adultery so now 2 or 3 people have sinned.
1Co 7:15 But if the unbelieving depart, let him depart. A brother or a sister is not under bondage in such cases: but God hath called us to peace.
In Word of Faith groups who take these scriptures literally when two believers divorce a staring contest ensues. The first person to remarry commits adultery against their ex which is justification for the other person to have divorced them, if they are not the party who initiated the divorce, clearing them with God to remarry (we might also say the unbelieving departed). We treat spousal physical abuse as the same as fornication. Since the two become one the spiritual intimacy never stops. Hitting a person after sex is the same as mistreating a person during intimacy which is rape and fornication. The only example of rape in the Bible followed this similar pattern 2 Samuel 13.
I'm Word of Faith and I know that in our group it used to be that it was very difficult for those who were divorced to be ministers (regardless of if they had initiated the divorce). In some of our circles they would no sooner have a divorced minister/deacon/teacher than a gay one. There are still churches who teach it that way in our group. They say serial monogamy disqualifies you from the ministry. If you are a minister a divorce can cost you your job and livelihood. If the divorce is messy even churches which accept divorcees will remove licences to minister. In some Christian circles it can cause you to be shunned by friends and family especially if the divorce is bad. So your idea that divorce is socially acceptable or makes you any less of a pariah for all groups of people is incorrect.
Mat 5:28 But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.
I do not know if from the Masters perspective if the adultery by remarriage is continuous. I hope for my parents sake it is not. They both participated in serial monogamy when they were younger. Regardless of how the Master views though who remarry we know how he views the rest of us and the prognoses is not any better. Without His Blood and the forgiveness of sins we all have had impure sexual thoughts (save those who by nature were not born sexual) and have committed adultery in our heart. Granted in most cases the fantasy did not become reality and the adultery stayed only in our heart. The difference between a sin in the heart and a sin in action is so trivial that it warranted no further discussion by the Master. So Christians who view those who are remarried and have committed adultery and we hope are not in continual adultery are in the same boat as those who have impure thoughts. They sinned they need to repent. Nothing about the sin is acceptable but it is in the past and cannot be corrected only avoided in the future. To ostracize those who are remarried (unless you view the remarried as a continual amount of adultery being no marriage at all) is to be hypocritical of the sins which we all have committed in the past.
So yeah divorce and adultery are a big deal to some of us still.
1Ti 1:9 Knowing this, that the law is not made for a righteous man, but for the lawless and disobedient, for the ungodly and for sinners, for unholy and profane, for murderers of fathers and murderers of mothers, for manslayers,
1Ti 1:10 For whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine;
Heb 2:18 For in that he himself hath suffered being tempted, he is able to succour them that are tempted.
Now about homosexuality. Sexuality is a choice. No one ever rightly forces any one else to be sexual in any way. It is commonly said that homosexuality is a genetic trait and it might be I don't know. However most psychologist do not view sexuality as three separate classification straight, bi and gay instead modern psychology views sexual orientation as a continuum ranging from absolutely heterosexual to absolutely gay. (Gender identity is viewed as a separate problem than sexual orientation. So I will discuss effeminacy separately.) For a person who is anything less than absolutely straight in addition to the adulterous thoughts which they have they will be tempted with homosexuality. However being tempted is not sin as Christ Himself was tempted. Giving into the temptation is sin. Arousal can be caused by the brain in a conscious function or by the spinal column in a unconscious function. An individual can do absolutely nothing about their spinal column reaction to anything which warrants arousal however they can consciously choose to not allow that part of their body to control and lead them. They can avoid things which cause temptation and not allow the temptation to define them. You can by choice and after the Master's prescription be asexual.
So there are many people who experience homosexual thoughts or responses and that is not sin just like divorce itself is not a sin. Only those who give in to the thoughts, by action or meditation, enter into the sin of homosexuality.
While there is the question of whether remarriage is a single sin or multiple sins there is no question that all the acts of homosexuality are individual sins and that anyone who participates in a homosexual marriage or a like relationship is practicing homosexuality and because of 1Co 6:10 is not saved by most interpretations where as the person who has a single adulterous (or even homosexual) thought or even action is still saved (they should most assuredly repent).
I hope you now understand that remarriage is a big deal to some of us in some cases equal to homosexuality in punishment. That many more people deal with homosexuality than remarriage and that both are sins. Yet the acts of homosexuality are more greatly condemned because each act is an individual sin.
1Co 6:9 Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,
1Co 6:10 Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.
1Co 11:14 Doth not even nature itself teach you, that, if a man have long hair, it is a shame unto him?
As an aside because homosexuality is often connected with gender identity: Gender identity is also important for a believer. Men wearing men's clothes and hairstyles and women wearing women's clothes and hairstyles. Men acting as men and women acting as women. Effeminacy is a sin which means violating gender identity. The Greek literally means uncertain affinity. However this does not mean that if you do not follow the norms for your gender in your society that you are effeminate, instead this means if you do not follow the norms for your gender as prescribed by the word then you are effeminate. It is true that a man or woman should not look or act like the opposite gender but the word defines how believers should act before our culture is allowed input into how we act. Believers are to walk in love as (God describes love) with both God and man. If in some societies that violates a gender identity in some fashion so be in it is necessary and not sin.
Rom 12:2 And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.
We are not conformed to the world but to the will of God by the Word. Gender identities come from the word before they come from society. Just because someone curses you in a manner which accuses you of violating your gender identity doesn't make you effeminate by the standard of the Bible and does not mean that you have sinned.