Earlier quoted context omitted.
Exactly. I used to be one of these hardcore guys typing fast and never taking my hands off the keyboard; then I got RSI and learned to appreciate value slow methodical approaches.
Interesting, I find I can type all day and not feel a thing in my wrists or hands, but just 15-30 minutes of continuous mouse usage, and I'm reaching for the pain medication. To me, staying able to use a computer without the mouse is about both speed and comfort.
Simply lower your mouse sensitivity. Now you use your mouse by moving your entire arm instead of your wrist.
Watch how this guy uses his mouse: https://www.youtube.com/watch?v=X89152oocsA
Of course they do it to aim better, but it also puts less strain on your wrist and hand