5. "they usually don't 'ban' them" In response to In response to 3
but they don't believe that it's normal human behaviour.
Rastas wouldn't accept gays either. this is another discussion right here... basically, a religion would accept who you are, but may not accept what you do with your spare time. especially if its perceived as going against their beliefs.
if you're having sex before marriage, that'd be the same thing.