I recently had that same epiphany. For fun, I decided to re-implement a simple chat server I wrote a while back in Erlang. I found that everything clicked - the type system worked with me instead of against me, and I was able to create prototypes as quickly as I could think of them. But, it took two years of thinking about Haskell before I could synthesize code in it. (code here: https://github.com/dmansen/haskell-chat)