Sounds like the same issue I had with Clojure and Scala. As soon as you touch anything Java or mutable, it's like WTF?
Come to the Elixir/Erlang camp; our functional turtles go all the way down! The only jarring thing is having to write to a mutable database. They even borrowed the |> operator! And it has great pattern matching of course.
Yeah, Elixir or Haskell is probably the way I'll wind up going if I want to pursue functional programming again. I can do the basics enough to handle LINQ well and stuff, so I'm getting away without a strong knowledge for now.
One of the biggest disappointments in software development to me though is that practically all of the cool libraries these days are hitting the javascript ecosystem rather than those of all the interesting languages.
So if you want to interact with these great libraries, you have to tolerate a pretty shitty language with annoying tooling at best. So when I want to do something practical, I wind up going that way disappointingly often.
Come to the Elixir/Erlang camp; our functional turtles go all the way down! The only jarring thing is having to write to a mutable database. They even borrowed the |> operator! And it has great pattern matching of course.