There are many reasons Haskell is difficult to learn, and the functional programming aspects are only part of it. I'd venture a guess that it's vastly easier to

There are many reasons Haskell is difficult to learn, and the functional programming aspects are only part of it. I'd venture a guess that it's vastly easier to go from say, python to clojure, than from python to haskell. Even neglecting clojure's impure escape hatches.