What StackExchange sites do you want to see?
Life? Careers? Travel?
That is what they made the StackExchange for... Why run sites in other topics when you can get others to pay (in the end) and run them for you!
... I think officially, they may launch a few more computer related sites if a certain topic becomes big and not exactly or directly related to an existing site, but I doubt they will move far away from computing.
I was sort of expecting a game(s)/console related site, but now there are Stack Exchange sites dealing with this, I doubt they will.
Only Jeff and the Fog Creek staff know the exact plans!
Travel (there are others, too)
"Life" is too undefined to list a particular site