Good point, Akira. Anyway I'm working with apps much more than I'm interacting with the OS, so the latter is not really my main concern, except dependability. Since using Win 8 (then 8.1, now 10), I had only one serious crash (the PC won't boot anymore, consequence of a botched auto update), and the easy, quick, and full recovery was to me reason enough to stick with those newer versions.
My main rant is limited to lack of responsiveness, even for simple operations like file viewing, selection, and copy. Apparently this occurs when being online and working with cloud-synchronized files. Not everything takes place in background threads.