Huh. Well, my voice isn't deeper, nor my "appendage" any more ... how does one put it ... "impressive", nor will I live to be 120 (50, if I'm lucky for all the junk food I've consumed), nor am I an intellectual genius, nor do I have a girl-friend with pert-attributes.
I just don't see it happening. Especially not in a thousand years. Our breed of humans will branch off once again should we ever reach the stars, and the differences may be more startling than realized.