While people don't understand why some people would ban cross gender characters, I don't get why some people would refuse to play in games that do this. For those posters are the only character ideas you have cross gender?
Like I said upthread, I haven't played a cross-gender PC long-term. So my objection is based less on what
I want to play, and more on what a rule against cross-gender PCs says about the GM or the group as a whole - which is to say, at the very least, they have very different ideas about what's important in gaming than I do. In other words, I can't even imagine how it could be an issue unless the people involved are people with whom I wouldn't game for plenty of other reasons.
It's also a fact that every single game I have played in for a long time has had a cross-gender PC - specifically, every game has had at least one male player with a female PC - and these have all been great games with great characters:
A justice-obsessed sorceress tracking down her fallen angel father in a Planescape game, a snooty Aes Sedai (but I repeat myself) in a Wheel of Time game, a risk-taking slightly-whacked-out vampire hunter in a
GURPS game - and I've heard about a great female knight played by a male friend of mine in a
GURPS game of which I wasn't part.
Forget that they're
female characters played by men - they're
good characters which would have been forbidden by dumbass rules against playing cross-gender PCs. The sorceress wouldn't have been the same character if she'd been a man; the female knight would have had a completely different character trajectory if she'd been a man; the vampire hunter would have represented something very different if she'd been a man; and hell, the Aes Sedai wouldn't even have existed if she'd been a man, since all Aes Sedai are women and none of the women in that game wanted to play one - though we did have a seekrit male channeler, as it turned out.
(In fact, when I think about that Wheel of Time game, it was the
female players at the table who played the slutty stereotype, or the hardass bitch, or the character who seemingly existed for the sole purpose of having a sexual encounter with the player's favourite character from the books - and was literally retired the session after she achieved that goal.)