Dude, Vegas sucks, maybe for a young single guy, OK, but really, there is a reason that they call it SIN CITY. The place is obsesses with greed, sex, and substance abuse. Crime is worse than you think there and climbing, and housing is still in a huge bubble (although it is crashing and SHOULD) so its not cheep by any means.
If you are looking for a nice, single, quality woman, I doubt there are a whole lot in Vegas. If you just want some easy action and you have money, Vegas is for you!