The worst part about a new windows version is that we're stuck with whatever fun new data collection and bs background processes they jam in there. Windows 10 already uses ~5-6 GB of RAM idling, which is already ridiculous, I can only imagine what 11 will use. You can stay on older versions but you get fucked over by DirectX and stuff just losing support. I wish linux distros were more feasible without forfeiting the ability to play any new releases or any games that use third-party anti-cheat / anti-piracy.
Windows 7 was the best Windows version by-far. There have been some notable improvements to the OS, like I do prefer the newer settings menu to 7s, but a lot of what Microsoft has done I feel has been in the wrong direction.