I totally respect anyone for just choosing a language that works best for them. They are tools for craftsman, and often are about which one makes you a better programmer.

For me, Clojure definitely made me way more productive. My background was in statically typed language mostly prior, though I had done some Python and JavaScript as well. With Clojure I feel I'm between 30% to 300% more productive overall. I think some of this is personal, depends on your style and your own strengths and weaknesses.