I was thinking about this recently when learning about Monads and that quote hits the nail on the head. It seems to me one of the main reasons so may blog posts

I was thinking about this recently when learning about Monads and that quote hits the nail on the head. It seems to me one of the main reasons so may blog posts try and fail to explain Monads is they try to explain "What" a monad is, without the motivations for why we need them. Unfortunately the "why" is very tied up the nature of functional style, laziness, etc. The primary use of a monad is it allows you to enforce execution order. If you're coming from an imperative language, execution order is a given so the reason you'd want monads really isn't clear.