The appeal of Haskell for me isn't necessarily that it makes everything easier. It does make a lot of things easier, but also many things become more difficult. No, the appeal of a purely functional language with an expressive type system is that it helps me write correct programs. I'm not claiming that Haskell will magically make code free of bugs, but in my personal experience when I write Haskell I make far fewer mistakes.

I can't really make the same claim of other functional languages that I've used, especially those with dynamic type checking.

There's really not much point in arguing about programming languages, though. People like what they like. I knew a guy that thought Fortran was still the greatest programming language because it's the fastest. Then you have the embedded device guys that will be using C until they die despite a mountain of valid criticism. Then there are the Lisp folks who are smart enough to not need help from a compiler to write programs. Etc. The thing is, these people are usually really productive with the tool that they've mastered, so of course they're all going to have anecdotal evidence of their language's superiority, just like me.