You can agree or disagree about the design decisions made by people contributing to Haskell language, but you have to admit that it's a pretty clever bunch of p

You can agree or disagree about the design decisions made by people contributing to Haskell language, but you have to admit that it's a pretty clever bunch of people. Haskell has contributed more to PL research in past few decades than any other language. That alone makes it a language every programmer should learn. Not because they should use it daily, but to learn what functional programming is in its purest form.