I mean, yes, of course. But the fact that it's not fluid in so many individuals is part of what fascinates me! The supposed binary split is not real of course

I mean, yes, of course. But the fact that it's not fluid in so many individuals is part of what fascinates me! The supposed binary split is not real of course, but you note yourself a rather strong bimodal distribution. And that distribution is itself, fascinating and hard to explain. I am gay, and I have been since I hit puberty. It's completely stable, a fixed personality trait my whole life. It's so... exact. That one little thing, completely inverted from a good majority of men. It's like someone flipped one little switch, that affected only that, at least as far as I can tell. Bisexuality or pansexuality or whatever you want to call it, on the other hand, seems to fit many of the proposed origins, far better than exclusive homosexuality would. E.g., fuzzy pattern matching gone awry for finding a suitable mate, triggering a bunch of false matches. But it's not like that. It's very precise. That has always struck me as ever so strange.