I’m thinking it could be the static typing but as I’ve done more and more work in static typed languages I like them a lot more than dynamically typed ones.
I write Haskell currently, but have used Clojure in the past. I find Haskell to be superior (static typing being one reason) however it takes more persistence and effort in the beginning to get used to Haskell.
I'd recommend that people start with something "easy" like Elm, and then transition to Haskell via frameworks like Miso or Reflex. That's exactly what I did.