Source:
What causes sexual orientation? Nature or Nurture....?
Important note: This is what we call providing actual backing for our opinions
The page linked contains a wealth of information, and shows basically that it is pretty impossible to state for sure one way or the other whether homosexuality is genetic or environmental. You want us to assume that you are right and that it is strictly environmental, while offering zero evidence. If you really want to play the game, I suggest you start rounding up sources, but I promise you that I can match you source for source, and we will end up with a draw. The causes of homosexuality are not known for sure, and to state that you are right, as a fact, is pure
hubris. You may be convinced you are right, but then again, I am pretty confident I am right too, that there are a number of causes of sexual orientation, and the fact there is a variety of causes is why the research is so conflicted.
By the way, the website I linked to as a whole(
ReligiousTolerance.org by the Ontario Consultants on Religious Tolerance) is an awesome website, even if you disagree with the overall concept. They offer a ton of documentation and do a fair job of presenting opposing views. Highly recommended. And, credit where credit is due, I got the link from a CaptainCourtesy post.