This is a spinoff from where MVP asked me why I play at party.
There are a couple of reasons:
(1) Alot of the really serious players play at UB or stars. I run into lots of good poker players at the $100s, but not alot a great SNG players. Most people who specialize in SNGs are at other sites. As evidenced by what you'll read in forums and message boards.
(2) The "fast structure incrases luck so much" angle has been a bit overhyped. I mean, if someone can get a 42% ROI at high stakes, then c'mon...
(3) This is the most important reason: the best part of my SNG game is my ability to play well when the blinds are large, stacks are small, and there's between 2 and 5 people left. People make lots of dumb decisions that I (usually) don't make. This type of skill is more important in a fast SNG than a slow one.