Much rarer. I'm not prepared to say it's totally absent, but I would be skeptical upon meeting a male who claims to be bisexual.
I would say it's more likely that he's a) in denial, or b) pushed by society to be with women. I'd say that any man in today's society (anywhere in the world – be it Sweden or Saudi Arabia) that sleeps with men is most likely gay.
Much rarer
I agreed with you as far as this. As for the rest it seems unlikely that our genetics implement a complete jump from male desiring to female desiring with no grey area (sweet spot?) in between.
What do you believe that most people on this site don't?
I'm especially looking for things that you wouldn't even mention if someone wasn't explicitly asking for them. Stuff you're not even comfortable writing under your own name. Making a one-shot account here is very easy, go ahead and do that if you don't want to tarnish your image.
I think a big problem with a "community" dedicated to being less wrong is that it will make people more concerned about APPEARING less wrong. The biggest part of my intellectual journey so far has been the acquisition of new and startling knowledge, and that knowledge doesn't seem likely to turn up here in the conditions that currently exist.
So please, tell me the crazy things you're otherwise afraid to say. I want to know them, because they might be true.