good story and good points (I personally am not as bit of a fan of porn with other guys just for the record) but:
my girlfriend is completely bisexual, that's about it... there's no "more hetero/homosexual" when it comes down to it. If you think both guys and girls are hot and would hit either, you can't say "weeeeeellll I kinda wanna hit the guuy more" (assuming they have the same hotness... if that made any sense...)
that being said... I don't know about guys (who draw dicks on the wall all the time and watch porn about guys with huge dicks etc.) I've wondered about their orientations too. or maybe they're just immature.... fuck I dunno...
but from my experiences, I can tell you that every girl has the potential to be lesbian. I've seen girl go from straight to pure lesbian over the course of... well you know. This is due to the fact that girls communicate more openly with girls, girls know a girls body better etc. so when it comes down to sex, who's gonna make them feel better? the one with more pussy experience.
in saying this, I take it upon myself to try and study how to please my girlfriend, about what places might turn her on more, but that's a different story (though general knowledge I think guys ought to start looking into, if they haven't... competition and all that)
Do I think everyone is a little gay? No not really when it comes to guys. I know I might throw a wrench into things but that also depends on what you classify as hermaphrodites. Having been around the internet, it's apparent that people are attracted to them. Why is this? you know? I'll leave that one on the table for debate.