Started learning Rails, drank the Kool-Aid, switched to VIM. I don't use VIM for development at my day-job, mostly just key-bindings in Intellij/VS Code, however, the amount of time saved has been worth the effort, and no RSI (also thankfully am able to use the fantastic track-pad on mac and a trackball for anything else).
Lately I've been feeling the pull to learn Emacs after learning about ORG-Mode and the extensibility of the software... unfortunately, the time investment here is likely to have no real benefit in my (current) work as a Java dev. Sigh, time to browse the who's hiring thread.
But Vim (and emacs) solves the repetitive motion problem by providing several means of readily repeating commands.
Most people seem to both type and use their mouse much more slowly than I do. And they also don't often have to (or want to), e.g. cleanup thousands of rows in an Excel worksheet, or have to repeat some kind of action in an app or web app dozens of times.
But I hate using my mouse generally. There are very few times where I want to use a mouse and having to use one, instead of being able to use the keyboard, is endlessly frustrating.
Thankfully, there are several great 'vi-style' browser extensions and there's even [Vimac](https://vimacapp.com/) for MacOS, tho I haven't tried the latter yet.