I didnt think about how hard Haskell is because I never forced myself to learn it. It just didnt interest me. With Java or C# I can make so many things with minimal friction. The other language that people talk about being hard is Rust. I am going to assume theres blog posts about it not being hard.

I like that with Go or Erlang everything I learned 5 or more years ago has still stuck to me. With D I can be effective quickly. With Rust I struggle a bit. Rust is probably great for building a web browser but doing backend web development feels way more work than Go or even Python (CherryPy). Haskell I dont even remember a darn thing anymore.