Which pronoun to use is very much a problem introduced by the last couple of generations. How someone or something identifies is irrelevant to almost everything. The antecedent can almost always be identified by context without resorting to irrelevant information like if it's "mine" or "yours", let alone having to choose the proper grammatical gender depending on animate status ("its" vs. "their").

I move we strike pronouns entirely from the English language. It turns out they're just too much trouble (although that sentence might be a little awkward). Bring back declensions.