As a counter data point, I switched to vim precisely because constantly reaching for the mouse was causing my problems. I switched to a vertical mouse for a whi

As a counter data point, I switched to vim precisely because constantly reaching for the mouse was causing my problems. I switched to a vertical mouse for a while and it helped, but still had problems. I switched to a connected split keyboard (Microsoft Natural Ergonomic Keyboard 4000) and now use a fully split keyboard (moonlander). Having the keyboard tilted and each half far away so that my shoulders aren't rotated inward was a huge win for me. But I guess when I was using the mouse, I wasn't "slow". I would "rapidly" switch from keyboard to mouse as fast as I could. The longer it takes me to get something from my head onto the screen, the more distracting and exhausting I find it. Eventually there will probably be neural links, and you just think something and it happens. Until then, vim is as close as I can get it.