Hspec is fun; at least it has been for me. People are watching the github repository, adding issues, making suggestions, forking, and fixing it. I've even gotten a few emails asking about hspec! I've also learned more about BDD, git, github, good (and not so good) design, Haskell idioms, and the Haskell community.
Even if hspec doesn't make me a better programmer or improve what I write, it's reminded me of how exciting and fulfilling programming and collaboration can be.