Just to throw some more fuel on the fire...
My parents were married for 22 years. My father is gay. Obviously, when my mother found this out, a divorce was imminent. I was 16 at the time.
I totally accept my father for who he is. He is my father, regardless of being "gay" or "straight". We have a very open relationship and discuss many aspects of the subject being posted here.
My dad did not "choose" to be gay. He married my mother in an attempt to conform to society's expectations of him. If he had not been forced by the discovery of his true sexual orientation, he would probably remain married to my mother to this day. If you look at the gay community, you will see many men his age who went through similar situations.
What is important is that these people live their lives the way they were meant to live them. It is not a matter of "turning" gay or straight, or even bisexual. It's a matter of happiness and the refusal to live a lie. I salute them for being proud of themselves, regardless of the animosity that they may receive for doing just that.
Sorry to get up on my little soapbox, but it's obviously a subject that hits close to home for me. Thanks for letting me rant!