Regarding the whole "you need to be this sex to play with me" thing, I think it's as simple as those types of players not being able to fully separate fantasy from reality. They likely feel more comfortable putting the moves on someone controlled by their prefered sex. And honestly, the first time someone wanted to do a romantic sub plot with me it felt awkward. Though I'm not sure if the person being a chick would have been of much comfort in that situation. I mean, I was a dude playing a woman so...