"You don't get to decide what I am! ... for the same reason that I don't get to decide what I am! 'What I am' is an empirical question to be settled by evidence and reasoning, the answer to which I can exert some limited control over in proportion to the strength of the self-modification techniques I have at my disposal!"
worth noting, however is that changing the social consensus of what one is, is the most powerful self-modification tool humans currently have available to them