Homosexuality in animals:
Homosexuality throughout history:
It took me less that 5 minutes to find those sources.
Since you seem to cite "observation" and "common sense" as the source of your point of view, please explain the following anecdotal evidence: In one family with four siblings. where a very strict form of Christianity is practiced, to the point of going to church 4 times a week and avoiding contact with anyone outside that church, forbidding watching of tv, films, reading books, etc... the two older male brothers exhibit sexual attraction to other men. The two younger are not old enough to make a determination. If your argument is correct, such a thing should not be possible.
Yes, I am aware that is an oversimplification, but it illustrates how your logic is unsound.
If homosexual behavior were socially attributable, it would not be observed in cultures which reject it. You remind me of Ahmadinejad claiming there are no gays in Iran.
As for deletions, some of my comments were deleted as well, so please don't make the assumption that there si some sort of vendetta against you.