I'm a Role Player in my RPGs. It's 99% about the story and basically playing Grown Up Pretend. As such, I don't play females more often, since I can't really get into the AVERAGE female mindset, but if the material lets me play variations on female characters, I have fun with that. Half of my The Old Republic characters were female, since there's lots of material (in the expanded universe, at least) I could use as reference for my character's thought process. In Fallout and Elder Scrolls games, I play almost exclusively as males, since there aren't all that many post-nuclear-apoc females, or Fantasy Females worth a damn outside of their cup sizes. In those situations, I can't really get into a character that I can't understand, and thus fall back on my MaleMind.