Thanks for your thoughts @kwladyka. I appreciate your comments on expertise, it certainly is valuable. For me, personally, I'm a fan of trying new languages. It's good for the soul? I learnt Clojure for the sake of learning, and it's been a very enriching experience. I'm not debating your comments about employment, they're likely true, but I was a programmer for fun long before I was a programmer for money. 🙂