If I'm on somebody else's system and need to hit the ground running Right Now then this comes into play instead - https://trout.me.uk/X11/vimrc (I think it's been a few years now since I've been annoyed enough by something in vim to figure out how to turn it off and add yet another line to that ;)
Out of curiosity, why bother to unmap the cursor keys? I don't ever use them in vim either, but is there something that is prevented from working with having them mapped in vim?
Because I don't ever hit them except by accident while using vi(m) so disabling means an accidental keypress does nothing rather than something I didn't want.
(my main reason for preferring original ex-vi is that when I typo a command, it beeps at me, whereas in vim the typo is usually some completely unrelated but valid command sequence and then WTF JUST HAPPENED and argh)
Also very useful if you do a lot of context switching or are an occasional user, to make sure your brain and fingers are in "vim mode" (at least one other line in the file makes this rather obvious)
And once it's there, why bother removing it? I think you are in minority if you actively prune your vimrc for dead config...
