Also, I find it's usually just easier for my brain to just retype a word from the start, rather than edit and fix the typo. And R is annoying if the length does

Also, I find it's usually just easier for my brain to just retype a word from the start, rather than edit and fix the typo. And R is annoying if the length doesn't match. A lot of my Vim usage is optimized to reduce the amount of time I need to spend thinking about what to do, rather than minimizing the number of keystrokes or whatnot.