:q, if you didn’t make a change, is even shorter.

It's not shorter—there is an implied `<cr>` at the end there and as you have it written it's the same length. Also, if you did make a change, `:q` will yell at you. If that's what you want, though, that's totally cool.

The advantage of `ZZ` is that it can be used as a general "close this window" command. It'll work on unmodifiable buffers as well without complaining.

If you do this half the time you will have forgotten that you have edited the file and won't be able to exit

If I forgot I had edited a file and I’m leaving it as if I hadn’t, I will want to know.

:wq just makes more sense to me, it’s “command: write, quit”

ZZ is just.. random?

Sure, but we're talking Vim here. Is that more random than `"0p`? Or `ctl-o`? Or `ctl-6`? Mnemonics are important for operations we only perform a few times per day or every other day or less. But we're talking about a _built-in_ mapping for an operation that is performed probably as much as 1000 times per day, give or take. Convenience beats out mnemonics here because you don't need them (if you care to use it).

I also think the bikeshed should be lime green :)

It’s fine, it’s vim and it’s all random, but I just can never remember ZZ so much as I can wq. That’s all