I have to say after diving into ClojureScript I came away thinking differently about a number of things - state management, how to program functionally when you are more constrained than in more permissive languages. It was a real learning experience.
This ^ right here, is what gets lost in all the squabbling over functional purity and parenthesis hate.
For a huge number of developers coming from the Javascript/web side of things, Clojurescript is poised so perfectly to usher them into thinking about composing your programs as pure functions, immutable data structures and organizing your state such that it is easy to reason about.
Eventually, Clojure led me to Haskell, and even back to how Javascript ought to be written (i.e. fantasy-land specs). This has been the single most eye opening learning effort that I have ever had the joy of undertaking since I started programming.
