'Preference implies a choice' - False.
I prefer English Mustard to German, nothing I can do about that.
Nature or Nurture makes someone homosexual or bisexual and they don't prefer just the opposite sex. I don't see that as a choice.
Don't try and twist my words to make me seem to have said what advances your argument.
I spend a fair bit of time in Second Life and associate with several people (and furries) who profess in Plurk to be LGBT, I don't see anywhere near as much lack of inclusion in that game-world as in the real world, which is why I view Gaymercon as unnecessary.
Maybe you need to get a more diverse virtual life than FPS's.