I hate Windows 10 for spying on us users and I really dislike this operational system, although there are some third-party programs, like Windows 10 Spy killer or something like that which deals with most of the privacy violations made by Micro$oft.
On my gaming laptop we are forced to use Win10, as it came pre-installed and Acer don’t have drivers for “older OS” for my model. There are crashes, especially to older games (Witcher 1), which aren’t present to my desktop Windows 7. Newer games work better. Also, the system constantly goes to some nonsense energy savings as if Micro$oft themselves pay my utility bills. I can’t do nothing about it, except making this “realtime priority” trick to squeeze 5-10% percent more from my gaming i7 6800… a processor which is 2.6 - 3.5 ghz by statement, but mostly spend its time between 900 - 3100 mhz. Only if I had control, it would’ve been clocked to 4 mhz and fixed multiplier to 40, just because.
For me, Windows 7 is the best operational system ever made and I will continue to use it till its done.