I think what he's trying to ask is: as religions prohibit homosexuality, why do homosexuals remain homosexual and thus "give up" religion instead of "giving up" religion.
From what i have read about the problem, it appears that there are quite many varied situations that this could apply to.
Some, perhaps most, homosexuals feel the conflict between the social demanRAB and taboos and themselves and suppress their homosexuality. They either remain solitary or they find themselves wives, but the marriage can encounter problems.
Some homosexuals decide to reinterpret the religion's teachings as obsolete, like most people living currently do (for example every christian who goes for a blutwurst, pork chops or shrimp dinner). The problem is that while those teachings are really a thing of the past, the ones about homosexuality aren't - they are current majority dogma. Which direction the future shall take, no one knows.
Some homosexuals see the teachings as an integral point of the religion and reject it completely, either adopting a more accepting religion or turning away from religion completely.
Only the third group actually truly considers itself to have rejected religion. The first two groups don't.
P.S. after writing this I tried to bote in the poll, but it was strangely constructed. One answer, for example, assumes the person voting to be himself a homosexual who has given up on religion, which is kind of restrictive.