While I prefer to play male characters, I actually do think certain roles or concepts are better represented with certain genders -- if you want them portrayed [i]realistically[/i] that is. I also don't think a story feels as realistic if there isn't a decent number of male and female characters. This is probably the exact same reason that I tend to avoid watching or reading works of fiction where the cast is composed only of a single gender outside of one character. There's exceptions to a lot of rules, but I don't think a plot works or feels relatable when one sex [i]significantly[/i] outweighs the other in terms of the cast -- a lot of writers only do this for the purpose of fanservice.

I'm going to avoid commenting on everything else being brought up here, since this is a topic of discussion that I believe me and my fiancé are in stark disagreement with a lot of other people on (general statement, not aimed at people commenting here) and I really don't need the headache of another debate right now -- as much as I do love exercising my mind, I've got work to do so I'm limiting my response to just answering the original poster. I'd prefer not to possibly open up the wrong [i]sort[/i] of debate here.