Before puberty, identification with a sexual orientation would have to be completely socially constructed, so in a gay-friendly society most people should identify as bisexual by default.
This is not the case. Many gay people know that they are gay at a young age, often well before puberty. Or they realize that they are somehow different from the others around them. Human sexuality is not as simple as an on-off switch with the whole system coming into play when people hit puberty.
ETA: There is now a third thread, so send new comments there.
Since the first thread has exceeded 500 comments, it seems time for a new one, with Eliezer's just-posted Chapter 33 & 34 to kick things off.
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