do you choose to be heterosexual? Are you telling me you could be gay if you wanted to, but you just choose not to... it has nothing to do with having zero attraction to the same sex, it's just a choice, right? They weren't born with a chemical composition that makes them "more likely" to be homosexual, they are born with one that makes them 100% likely to be homosexual. What you are talking about is bisexual, or perhaps pansexuality.