Having worked with several functional programming languages, my personal experience is that Clojure seems to lean more towards the productive end of the spectru

Having worked with several functional programming languages, my personal experience is that Clojure seems to lean more towards the productive end of the spectrum than the pure end. There is a definite learning curve coming from JavaScript, but (as someone who currently writes more JavaScript than ClojureScript), I still find that the ClojureScript that I write ends up being simpler will a smaller code footprint than a similar JS solution. Clojure(Script) is not for everybody, but I love it because it is very natural for me to use, and it seems to fit the way that I think better than most OO languages that encourage top-down design. I agree that security, performance and correctness are good end goals, but they are not the only goals (another one that comes to mind is maintainability), and I have found Clojure to be a good means to reach those goals.