Like I mentioned, human sexuality is so fluid that on one can really say with any certainty what they are exactly. We're just who we are, and people should just leave it at that. This need of the human race to compartmentalize everything, to fit everything into it's own neat little category, is so counterproductive. As you say, it works against us.
I only identify myself as a bisexual because it helps others understand me a bit better, but not even that word "bisexual" is accurate.