These are the small but extremely user-centric quality of life features that I like about KDE. Most applications I use aren't KDE based (Firefox, VSCode, emacs, movie) but KWin, Dolphin, Plasma panels have unmatched ease whih grows on you.

I would hate reading a censored book. But a second had book with side notes and highlights is a chief reason for me to buy second hand book. Call it a time traveling mail box.