Kinda ditto. A new frontier, I guess. That, and some of the guys make such KUTE girls! *squeals in fangirlishness* And some of the girls would make better guys. *trying not to mention names*
I have no problem writing hetero or yaoi/yuri stories. (Not big on yuri, but if you give me a coupling I really like, I'll do it.)
I think the concept of genderswitch is unique, as in a woman born in a mans body in RL tries to change it to their liking(ie-transexuals). To have something against it, would mean that I have something against people who I call friends, and people who have done nothing wrong to but be themselves.
That, and it's fiction. Who cares? That's what fiction is about. Something different and neat for a change, instead of trying to stay within the lines. Some of it's just blown out of proportion sometimes.
Anyway, that's my long, and probably unimportant, thought on it.