That was the most memorable issue I had with Haskell; thinking back, other stuff that bugged me was some of the idioms needed to move between pure and impure code. You may be right though, it's something I should probably revisit. It's been a couple years and I did end up taking some of the lessons learned from Haskell into other languages (mostly not at a low level, though -- it's more that Haskell informed how to approach some higher-level design problems). Railway-oriented programming in particular stuck with me as a _great_ pattern that's consistently useful across languages.

I still think it's worth learning by anyone who's got the time for it.