I have chosen Rust over Golang on a number of occasions for a much more boring reason: Golang lacks enums / tagged unions / sum types. When you have to manually

I have chosen Rust over Golang on a number of occasions for a much more boring reason: Golang lacks enums / tagged unions / sum types. When you have to manually eyeball your code to ensure exhaustiveness, it gets old and tiring really fast. For that reason I'd use OCaml as well even though it has GC, because it has sum types. That is, if I ever learn OCaml properly.