I also dropped Clojure/ClojureScript, even though it was my favorite language between 2012 and 2014/2015. The main reason for me is the progression of Java and JavaScript during these years, which make ClojureScript less useful. ES6 has completely transformed the JavaScript development. I finally enjoy to code in JavaScript - this wasn't the case before. On the contrary, coding in ClojureScript became painful. It's difficult to follow the recent trends, to integrate new libraries without hassle. Currently I work on a project that use DraftJS. I don't want to know how to integrate it in ClojureScript ! It's a waste of time, and again the "joy of Clojure" still exists but is now less superior to the "joy of Javascript".

On the Clojure/JVM side, Java 8 is far from perfect but the lambdas expressions have made the language a bit less boring. I think many developer feel less the urge to leave Java for an alternative language. And if they really want it, there is Scala, still the best strong statically typed language on the JVM, and so, for me, still the best language for backend development.

In short, Clojure/ClojureScript was for me the best language for rapid prototyping and for front development. I've never really considered it for "serious" backend applications based on a complex data models, because of its dynamic typing. However, JavaScript development became much more pleasant, making ClojureScript less attractive, less differentiating. I believe that today, you have to be a true Clojure fan to code in ClojureScript.