I am confused. you say most guys end up playing female characters anyways, yet females also tend to play females, so that would mean a lot of straight males are excluded from marrying their girlfriends. And yet you think same sex marriage isn't necessary because of this?
Unless you meant that most gay guys play women characters, in which case you're dead wrong. I've met 0 gay guys who've played a female character, for the same reason so many straight guys play female characters: we like our eye candy.
And if you don't care either way, doesn't it make sense to vote yes, as same-sex marriage being allowed means that more people get to enjoy content, instead of less? Why vote no when your vote could potentially affect thousands of others?
If you really don't care, vote yes, not no. Because by voting no, you're saying you care enough to take people's right to enjoy the same content you can away, not letting it stay.