I dont understand why people even do that when ZZ is easier xD

I disagree that's two combos (Shift + z) on awkward key whereas you should be used to : by now

ZZ is less key presses - :wq is [shift;wq], the keys of which are spread all over the keyboard vs [shiftzz] which is much less traversing, quicker and can be done with little and ring finger with no physical trouble

to add, :x is still [shift;xENTER] so 4 key presses also!

Because :wq is sufficient and I need :w and :q! anyway

set confirm

This is probably because :X encrypts a file so too easy to make that mistake?