For now at least it's possible to disable the CMD+Q shortcut entirely by setting the option "browser.quitShortcut.disabled" to true in about:config. This disables the keyboard shortcut and makes it so that the only way to quit is to select the Quit option from the File menu which is hard to do by accident.
Signed: a fellow Mac user who pressed CMD+Q by accident one too many times.
Very highly recommended even if it doesn't seem like your cup of tea based on the title. It goes quite deep into the practical aspects of the crazy architecture of the Apolo Lunar Lander Guidance Computer.
> Compare this to Korean where you can learn the writing system in a single day
I really, REALLY wish people would stop saying this about Korean. Sure, there's a couple of dozen letters and you can learn their individual default pronunciations in a single day, I'm not doubting that.
But that literally doesn't get you even close to being able to correctly pronounce many common words, because, guess what, when these letters are together in a word they influence each other in different ways and their pronunciation changes or they may not even get pronounced at all.
There is a reason why all these "learn hangul in 1 hour" web pages/videos never mention the existence of four-letter syllables. ;)
Learning Japanese phonentic alphabet(s) on the other hand, really can be done in one day and they are consistent and phonetic and there's no weirdness in pronunciation, but of course then you have to deal with thousands of kanji too. So I guess from that perspective, Korean really is easier, but learning to correctly pronounce the sounds and words in Korean is in my opinion much harder than in Japanese.
Signed: a fellow Mac user who pressed CMD+Q by accident one too many times.