I feel this so much, been working with F# in some sub projects. C# is hard to go back to. Though Microsoft's route of stealing wholesale from the former is making it gradually more palatable.

Clojure is such a joy in my programming life. Even though I don't use it in my job, learning it made me change partially my programming style in Java, such as functions decomposition.

Sadly I don't see any chance that I'm going to use it for real job in the future. The market is too narrow for this language. Hard fact that If I don't use it for the job, I cannot reach to its full potential. Guess it should stay as my hobby language for now.