And space leakiness...
None of my Haskell programs have any space leaks.
While go makes a lot of correctness bugs really easy to accidentally make, Haskell does make a certain class of leak easier to maker. I'd personally take a correct program that leaks in some scenario over an incorrect one that does the wrong thing.
I don't understand this: You claim you've used Haskell? Haskell beats Go's concurrency out of the water.
Not to mention conciseness...