I've become less and less careful with this over the years. I genuinely don't care about gender identification, as far as I'm concerned you're human and that's the base on which you're going to be treated. If you want to be called by a different pronoun, sure just tell me, no big deal, but I'll only do that because you asked me as a person. If you want me to put you on a pedestal for something that's about as important to me as being blonde or brunette... Well, you're probably not going to like me anyway. If on the other hand, we can hang out and have enjoy our selves, what could it possibly matter to me whether you identify as XX or XY?
Strangely enough, though, there's more than enough people who take offence to this mindset.