Why the protestants, (and I exclude Lutherans & Anglicans, maybe some Methodists too), don't have a daily prayer rule ? Even if it isn't as elaborate as the Catholic or Orthodox ones, they can surely come up with a daily prayer structure.
Then why won't/don't they?
For example, They could take sections from the Bible, prayers by early saints, church fathers etc and create one.
Dividing the day into section for prayers means people have something common in faith to do daily and a chance to come together & pray.
Even if they are alone, they could pray & have a feeling of praying with others(would be especially comforting to new converts, people who stay alone or at remote places).
People go to the gym at specific times, they eat at specific times. They spare, divide & fix times of the day for every other activity. Then why not for prayer ?
There are parts in the Bible where Apostles are shown going to the temple for their daily prayers at specific hours. Together or alone, they are shown doing it.
Protestants go to remote places for new converts, they stress the need for prayer, they stress the need for community, self sufficiency in prayer, they especially stress the need for following the apostles and Bible.
Then why isn't the daily prayer practice followed ?
Psalms 55: 16-18: As for me, I call to God, and the Lord saves me. Evening, morning and noon I cry out in distress, and he hears my voice. He rescues me unharmed from the battle waged against me, even though many oppose me.
Psalms 77:2: When I was in distress, I sought the Lord; at night I stretched out untiring hands, and I would not be comforted.
Psalms 42:8" By day the Lord directs his love, at night his song is with me— a prayer to the God of my life.
Psalms 92:1-3: It is good to praise the Lord and make music to your name, O Most High, proclaiming your love in the morning and your faithfulness at night, to the music of the ten-stringed lyre and the melody of the harp.
Psalm 59:16: But I will sing of your strength, in the morning I will sing of your love; for you are my fortress, my refuge in times of trouble.
Psalm 119: 54-56: Your decrees are the theme of my song wherever I lodge. In the night, Lord, I remember your name, that I may keep your law. This has been my practice: I obey your precepts.
Psalms 119:61-63: Though the wicked bind me with ropes, I will not forget your law. At midnight I rise to give you thanks for your righteous laws. I am a friend to all who fear you, to all who follow your precepts.
Psalm 5:3: In the morning, LORD, you hear my voice; in the morning I lay my requests before you and wait expectantly.
Daniel 6:10-11: Now when Daniel learned that the decree had been published, he went home to his upstairs room where the windows opened toward Jerusalem. Three times a day he got down on his knees and prayed, giving thanks to his God, just as he had done before. Then these men went as a group and found Daniel praying and asking God for help.
New Testament (by early believers & apostles)
Acts 3:1: One day Peter and John were going up to the temple at the time of prayer—at three in the afternoon.
Acts 10:1-3: At Caesarea there was a man named Cornelius, a centurion in what was known as the Italian Regiment. He and all his family were devout and God-fearing; he gave generously to those in need and prayed to God regularly. One day at about three in the afternoon he had a vision. He distinctly saw an angel of God, who came to him and said, “Cornelius!”
Acts 10:9: About noon the following day as they were on their journey and approaching the city, Peter went up on the roof to pray.
Acts 10:30: Cornelius answered: "Three days ago I was in my house praying at this hour, at three in the afternoon. Suddenly a man in shining clothes stood before me.
Also various parts where Jesus went for prayer.
I saw how Luther modified his daily Office to suit the Laity.
Now I also saw in John Calvin's Institutes of the Christian Religion his opinion for a daily prayer rule.
50. But although it has been said above (sec. 7, 27, &c.), that we ought always to raise our minds upwards towards God, and pray without ceasing, yet such is our weakness, which requires to be supported, such our torpor, which requires to be stimulated, that it is requisite for us to appoint special hours for this exercise, hours which are not to pass away without prayer, and during which the whole affections of our minds are to be completely occupied; namely, when we rise in the morning, before we commence our daily work, when we sit down to food, when by the blessing of God we have taken it, and when we retire to rest.
29. This assiduity in prayer, though it specially refers to the peculiar private prayers of individuals, extends also in some measure to the public prayers of the Church. These, it may be said, cannot be continual, and ought not to be made, except in the manner which, for the sake of order, has been established by public consent. This I admit, and hence certain hours are fixed beforehand, hours which, though indifferent in regard to God, are necessary for the use of man, that the general convenience may be consulted, and all things be done in the Church, as Paul enjoins, “decently and in order,” (1 Cor. 14:40).
31 Here, if any error is committed through imprudence or forgetfulness, no crime is perpetrated; but if this is done from contempt, such contumacy must be disapproved. In like manner, it is of no consequence what the days and hours are, what the nature of the edifices, and what psalms are sung on each day. But it is proper that there should be certain days and stated hours, and a place fit for receiving all, if any regard is had to the preservation of peace. For what a seed-bed of quarrels will confusion in such matters be, if every one is allowed at pleasure to alter what pertains to common order?