[axlprose]

>particularly Haskell programmers, seem not to care about readability and maintainability

Say what you want about the foreign-ness of the syntax, but Haskell code is some of the most maintainable code out there. I can often times dive into another person's haskell code and grok it more easily than the equivalent code in a "friendlier" language like python or ruby, nevermind a more comparable language like scala. Haskell is also a breeze to refactor, the compiler and type system make changing and moving arbitrary chunks of code around pretty straight-forward, even when the code is using abstractions you're not familiar with; something which cannot be said for many other languages. The biggest downside to haskell (apart from the learning curve) is having to deal with cabal+stack.