As Border House points out, this isn't just WoW's problem. Fantasy and sci-fi in general have been the domain of boys in the past (even if that is changing quickly), and the sexual depictions in the genre have reflected that, for both traditional and financial reasons. As I pointed out the other day, all of Blizzard's luminaries thus far have been men -- is it any surprise that the game is designed from a mostly male perspective? And as BH also says, fortunately, WoW has lots of different gear. If you don't like what your character is wearing, then you can find something else.