These Modern Programming Languages Will Make You Suffer

> It’s no secret that in order to use Haskell productively, one has to be well-versed in category theory first (I’m not kidding).

No you don't.

> Writing even a simple “hello world” program in Haskell requires understanding of Monads (IO Monads in particular).

This is like saying you can't drive a car without understanding how an internal combustion engine works.