Honestly I find the entire question "Why do men play a female character" to be bizarre and borderline nonsensical.
Yeah, there are some odd and/or unflattering latent assumptions in the question. I don't see this as any different than enjoying a movie or book where the lead is a female. As a gamer in an RPG, you are participating in the narration of a story. Are men incapable of writing female leads? Why, I'm offended!
