I? LOVE Vegas!
This was my third trip out there.
Love the food, love window shopping, love strolling through the hotels & shops. The weather's great in Spring, and the pool at Flamingo was awesome! I'm not a huge gambler, but I have enough luck that I can keep playing for a bit. I like the all lights, the free stuff (animal habitats, Bellagio fountains, Mirage volcano, Caesar's tacky decor, Venetian's canal, etc.), the different hotel themes, the free drinks while you gamble.
I wouldn't want to live there or anything (no offense to Seeker or Creeping) and I could do without a few things (those creepy porno guys flapping those brochures at you, the price of drinks in restaurants, all the ass photos in cabs & on billboards) but in general, I'd go every couple of years if I could.