In Genesis 11:9 we see that humanity had a single purpose, a single city and a single 'tower'. However that purpose and the following construction were in discord to Deity, thus the Lord 'scattered them abroad' and they 'left off to build the city' . . . .
. . . . due to the introduction of multiple languages.
Thus we see that multiple languages, and the lack of them being understood by everybody concerned, caused confusion, strife, scattering and the disruption of purpose.
Paul teaches that :
God is not the author of confusion [1 Corinthians 14:33 KJV],
though clearly he scatters those who, confusedly, build that which is in opposition to his own purposes.
He also teaches :
Let nothing be done through strife [Philippians 2:3 KJV].
And Paul also speaks thus :
Now I beseech you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing [1 Corinthians 1:10 KJV].
Thus to the Corinthian saints, who appear to have been enthusiastically speaking in 'tongues', to these very persons Paul enjoins against confusion and beseeches rather that they all speak the same thing.
Since diverse language causes scattering and disruption of purpose and since Paul enjoins against confusion and beseeches speaking the same thing, why do some engage in the speaking of 'tongues' ?
I am looking for an answer to this question by those who support and participate in the practice or the reportage of the writing of those who do so.
Edit upon Comment (for further clarity)
My question is quite specific. Throughout Christendom, people are speaking in 'multiple languages' -- 'diverse language' (quotes from my question) which requires interpretation as it is not understood by the hearers. And that appears to me to be like Babel.