I understand your reactions Zerbie and Brian and how you might hear what Troy wrote in that light but don't miss what he is saying.
He is asking the question that I have often asked: "Why would anyone assume that sexual orientation is a choice?" The personal experience of the vast majority of straight people and gay people is that we "woke up that way" one day shortly after our eleventh or twefth birthday. Those of us who are gay spent huge amounts of psychological, emotional, and spiritual energy trying to change and couldn't. So WHY WOULD SOMEONE ASSUME THAT SEXUAL ORIENTATION IS A CHOICE???
One answer is the one that Troy is positing. For some (many?) people the object of sexual attraction IS a choice and those people are ASSUMING THAT EVERYONE IS LIKE THEM and some are CHOOSING to have sex with people of the same gender.
He is not saying that all bi-sexuals are bigots. he is suggesting that the possibility exists that all the homophobic bigots are bi-sexuals who assume that their experience is universal. The irony of that is of course STAGGERING. It is also amusing to imagine what would happen to the "its a lifestyle choice" argument if we started to answer it by suggesting to those who make it that "their slip is showing"

