I've never met a programmer who isn't a good typist.
That said, we as programmers should know you shouldn't waste time optimizing things that don't matter. If I had to guess, your ability to navigate with a keyboard (shift+arrows to highlight, control+arrows to move cursor by one word, etc) is where better optimizations can be made.
Or even better, moving your cursor without reaching for the arrows with emacs style C-f, C-b shortcuts (which also work in TextMate and various other editors) or vim's hjkl style navigation.
That said, we as programmers should know you shouldn't waste time optimizing things that don't matter. If I had to guess, your ability to navigate with a keyboard (shift+arrows to highlight, control+arrows to move cursor by one word, etc) is where better optimizations can be made.