>>I'll start at the end. Everything we know says being gay isn't a choice. If it were, then most of us would know when we chose to be straight. Can't speak for you, but I sure don't remember ever making such a choice; I just was and am straight. When did you choose to be straight?
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>This is very questionable science.
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>I don't have the science to say, "it's a choice", but the science if it being genetic is specious. There are several factors that don't help the genetic claim - one of them being the numbers on identical twins. There are numerous studies on identical twins. Genetic/prenatal vs post-birth factors and the outcomes strongly indicate a genetic element is minor at best.
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>This is a complex question (made even more complex by the breakdown of women vs men), and is hardly settled science.

Note that I didn't use term "genetic," simply said it's not a choice. My best guess as a non-expert is that, like so much else, this will turn out to be one of those things where there's a combination of genetics making it possible and then some prenatal or post-natal factors coming into play. But still not a question of some people simply deciding that they'll be gay.

Tamar