What drove you away from Haskell? Expressiveness there is just awesome, it must've been hard to walk away from that.

I don't know what uggedal's reason is, but mine has to do with the JVM. Deploying nativity on the JVM is a pretty big deal. You've got entire enterprises with vested interest in your deployment platform and a Lisp as your language.

Haskell does seem very nice. However Haskell is fairly complex. It is telling that the Clojure cheat sheet takes up only 2 pages.