I don't have the experience with non imperitive languages which makes learning clojure a really steep curve. Also the error you can recieve with clojure are many times a big mystery, I've never seen as bad error reporting as I've seen with Clojure. Other issues I have with it is that Clojure-fans tends to want to write EVERYTHING in clojure or lisp style code. That includes stuff like Javascript, HTML and similar stuff. Things that just makes it even more complicated.
I have really tried to learn it several times but got so frustrated I quit. We have a small thing at work which is written in Clojure and no one knows how to fix issues with it since no one has any experience with Clojure.
Clojure does not fit my brain.