[faboo]

Amusingly, I'm in the reverse situation: loving working in Haskell and reeally want to try Rust but I just don't have the time.

For what it's worth, Haskell can be compiled to code that's quite fast. Somewhat unfortunately, the difference between GHC's vanilla output and its speed-optimized output can be quite vast, which I think gives the impression that the language or a given program is necessarily slow.