This is really the thing.
That Tim Cook says he's not merging the two is only somewhat comforting (after his "why would anyone buy a PC?" line - perhaps he thinks the Mac is not a PC, but uhhh...)
I really, really, really dislike iOS, and hate most of the changes that have come over Mac OS since Snow Leopard, with the possible exception of tightened security (they haven't done a great job with this from an ease-of-use standpoint - it's kinda buggy).
It's like Apple is trying to turn Mac OS into iOS through the back door. #donotwant