Good points, but in certain contexts, one has to make reference to their...whatever...."minority type". If there is a conversation about race, is a black person going to want to use "black" or "African American"?...etc. Sure, stuff like that shouldn't come up when you're just walking/rolling down the boardwalk windowshopping surf shops, or sitting at home with the significant other watching The Notebook, or whatever. It's irrelevant then.
"For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring." - Carl Sagan