Is there a greater stigma in America to be a virgin at 30 than to be "gay"?
And while a man may be able to step away from that lifestyle, he will always be for intensive purposes a bisexual (even if it was just "experimentation"). Odd that there are many ads (in the weekly free newspaper) that ask "Are you bi-curious"? Why is the assumption that anyone who acts on that curiousity IS gay and not a confused heterosexual? I guess they like to add them to their ranks when it comes time to tell us how many people "are" homosexual.
If you are simply talking about sex acts, I think you can have sex acts without regard to gender or orientation, it's just a matter of what you can make your mind accept.