Many people claim that Gen 19:1-25 doesn't teach that God destroyed Sodom and Gomorrah for the sake of homosexuality. They claim that Sodom's sins were pride, fulness of bread, and abundance of idleness, and they didn't help poor and needy.

The book of Ezekiel teaches that Sodom's sins were pride, fulness of bread, and abundance of idleness, and they didn't help poor and needy. Ezekiel continues saying that they were haughty and committed abomination before God, and for the reason of abomination God destroyed Sodom:

Eze 16:
49 Behold, this was the iniquity of thy sister Sodom, pride, fulness of bread, and abundance of idleness was in her and in her daughters, neither did she strengthen the hand of the poor and needy.
50 And they were haughty, and committed abomination (towebah) before me: therefore I took them away as I saw good.

Lev 18:22 Thou shalt not lie with mankind, as with womankind: it is abomination (towebah).

For the sake of sodomites' abomination acts, God destroyed Sodom as Ezekiel 16:49,50 shows for us. Ezekiel uses 16:50 Hebrew word towebah, which is the exact same Hebrew word used in Lev 18:22 (and Lev 20:13) which describes homosexuality as an abomination. It is very clear that in Ezekiel 16:50, abomination means homosexual acts as the reason for destroying of Sodom. Homosexuality was not only sin of Sodom and Gomorrah, but it was the primary reason for their destruction as Eze 16:50 say that their pride and abomination (towebah - means homosexuality) before God was the reason for their destruction. The Bible says that the character of the sin of the homosexuality is the pride.

Php 3:
18 (For many walk, of whom I have told you often, and now tell you even weeping, that they are the enemies of the cross of Christ:
19 Whose end is destruction, whose God is their belly, and whose glory is in their shame, who mind earthly things.)

It is not coincidence that the gay movement uses the concept gay pride. Gays say that the word pride is a positive term to promote the dignity of gay people. The Bible says that pride is the root of the sin of the homosexuality. The Bible says that the enemies of the cross of Jesus turn the shame of sin into the glory. Gay people have done it, because they have changed the sin of homosexuality into the pride as the positive thing, although it is a sin before God.

Some people say that homosexual gang rape was the sin of Sodom and Gomorrah, but God doesn't judge caring and loving homosexuality. Because Ezekiel uses exactly the same word (towebah) for the reason of destruction, which means homosexual act, so it means that the judgement of God came for the sake of all kinds of homosexual actions. The judgement of God didn't come for the reason that in those cities only some practiced homosexuality, but because it was very common they faced the judgement of God. Sodomites pride, fulness of bread, and abundance of idleness and hardened hearts towards poor and needy were sins, but destruction came for the sake of homosexuality, and the New Testament confirms this:

Jude1:7 Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire.

The word strange refers to unnatural sex behaviour, which is different than natural sex between men and women and the book of Ezekiel proves this using the word (towebah) that is connected to homosexuality. The book of Jude confirms that in Sodom and Gomorrah practiced fornication going after strange flesh, which means homosexuality. Going after strange flesh doesn't describe natural sex between men and women, but unnatural sex where men have practiced sex with other men. For this reason, they suffer the vengeance of eternal fire. 

The whole article is in my site: The Bible and homosexuality