Why not alter ourselves? Mankind is slowing down evolutionary wise, maybe even fully stopping? Maybe our next step is man-made alterations, we're already doing things like re-attacthing limbs, face transplants etc. Why not go further?
I was watching a lecture on ted.com (inventor/scientific thinkers videos from the TED main place) and a man was theorising that if we put enough money into it, it would be possible within a short amount of time to extend human lives, slow the aging process etc.