Tried to switch to vim/Emacs repeatedly for more than 10 years, never understood the reason of cryptic commands and shortcuts, that was OK 25 years ago, but since then, keyboards got, say, _arrow keys_. Alt-F is "forward one word"? OK, can be memorized, but there is Alt-right arrow for everything else, much more intuitive. UI matters. Shortcuts and their relationships are part of the UI, and it's horrible for Emacs.…
Arrow keys are the worst ergonomically. You need to be able to stay as close as possible to the home position. When my RSI got really bad I noticed how bad it can be to keep reaching for the arrow keys.
If you ask a physical therapist what is the best way to sit on a chair they will say it is to switch position constantly. I'm not buying that it is opposite for a keyboard.