I would argue that statically typed languages aren't really an ergonomic cost. The amount of testing I have to do to be confident in a dynamically typed languag

I would argue that statically typed languages aren't really an ergonomic cost. The amount of testing I have to do to be confident in a dynamically typed language is quite unergonomic. Having to add types is a small cost in comparison to the tests I don't have to write. Additionally, knowing the type allows me to be able to reason better about the code I write; it's more predictable. Ultimately, I like statically typed languages miles better than dynamically typed ones. They're also more performant and I like that.