Desires are inate. There are survival desires, i.e. the need to eat, drink, sleep. But no one dies from not having sex. No one dies from not stealing, lying, murdering.
Sorry, there is no excuse for giving in to a desire to do something that is wrong in the eyes of God. And same gender sex is wrong.
If you want to do something that is wrong simply because you have the desire to do it, don't expect everyone to say "Well, he couldn't help it."
So, you acknowledge that they may be born with the inate desire (i.e. born gay)? Of course, they don't have to act on it. Then again, plenty of people (gay or not) have issues with controlling their desires (pre-marital sex, adultery, etc.). I personally find the idea of being homosexual revolting, but I really don't care what two consenting adults do in the privacy of their own home.