You don't always bang out code at your max typing speed. But you do have bursts of fast code writing at times, which is extremely useful.
Also, I live in the shell and typing 200 char long one liners to do something useful and if you are a fast typist very quick too. It's great for generating on the fly reports, searches etc. This is the kind of thing that would take a slow typist a lot of time. Most of slow typists I know don't bother with these things because it takes too long. As a consequence they also get rusty with their shell foo, or never get good at it to begin with.
Also, I live in the shell and typing 200 char long one liners to do something useful and if you are a fast typist very quick too. It's great for generating on the fly reports, searches etc. This is the kind of thing that would take a slow typist a lot of time. Most of slow typists I know don't bother with these things because it takes too long. As a consequence they also get rusty with their shell foo, or never get good at it to begin with.