Lots of points you make are true. Yes, if you yank the plug without saving you lose your work. Or Exim will have to flush the queue again. Or vim will have a dangling swapfile that it will ask you about next time. Or you’ll have to start over on your game of solitaire.

And yes, SD cards have flaws.

My question was: if I turn my computer off every day by yanking the power cord, I expect nothing to break, so what am I missing when people seem so wary of doing it?

(Recall that this was all in the context of a parent comment lamenting a lack of a dedicated shutdown button on the RPi.)