I think people are born bisexual and the make subconscious choices based on the pressures of society. I have no question in my mind about being bisexual. But I'm also a hypocrite: I would never date a girl who is bisexual because that means they also sleep with men and men are so dirty that I'd never sleep with a girl who had slept with a man.
Having yet another vote on refinery legislation that uses high oil prices as an excuse to weaken environmental protections and to give more legislative gifts to the oil industry is misguided in the extreme.