Okay, let me drop a little knowledge on you.
Every human associates with (at least, but that's not an argument I'm willing to make) one gender (mostly, ditto above) all the time, correct? However, a human's age is determined by time, not their own person, correct? So one might surmise that affiliating as something you cannot change without science-fiction as wacky and affiliating as something you feel like to be acceptable, given that a person's age has no way to officially change, but every person can be either gender at one time.
Given I'm cis, I suggest you step it up.