I spent a couple of years using Haskell, but a few months after I started using Clojure I've switched over to using it pretty much exclusively.

I certainly didn't find Clojure to be a waste of time; to my mind it's a far more practically-minded language. It's philosophy of decoupling components is also interesting. For example, in Haskell, the static type system is coupled to the language; in Clojure, the static type system is an optional library.