We know by reading the scripture that the sin of homosexuality was very present. In fact the word sodomite several times in the scriptures refers to homosexuals. So why would a word used to describe homosexuals come from the name of the city. Genesis 13:13. But the men of Sodom were wicked and sinners before the Lord exceedingly. They were wicked sinners and the sign that the bible shows was their sin of homosexuality. If they had other sins the bible would have expressed. Gays try to say that it was the sin of inhospitality, but that is not expressed, but homosexuality is. Genesis 19:4. But before they lay down, the men of the city, even the men of Sodom, compassed the house round, both old and young, all the people from every quarter: 5. And they called unto Lot, and said unto him, Where are the men which came in to thee this night? bring them out unto us, that we may know them. The key word is “know them” so that they may know them. They were referring to the angels that came to see Lot. Genesis 4:1. And Adam knew Eve his wife; and she conceived, and bare Cain, and said, I have gotten a man from the Lord. See Adam knew his wife and they had a baby. Because this is referring to sex. This was not extreme inhospitality. The wicked men of Sodom wanted to have sex. God is very clear that homosexuality is wrong. Leviticus 18:22. Thou shalt not lie with mankind, as with womankind: it is abomination. God says homosexuality is something disgusting. Abomination is the strongest word for something that is disgusting or unclean.
So the sin of homosexuality was very present in Sodom, But I personally believe it was not because of homosexuals that GOD destroyed Sodom. Homosexuality was only and outward sign of their wickedness.