But I got bitterly disappointed by Microsoft, I pay them for Windows and Office, a very simple transaction, right? Guess what, Windows 10 not only displays ads in the startmenu and taskbar. Also it automatically installs Pay2Win gambling games littered with loot crates to the startmenu. Also it tries to upgrade itself whenever it wants (in the middle of gaming, during boot, during shutting down) and not just updates but re-installs a new copy of the whole OS in-place, loosing all customization settings. Also it collects all my keyboard inputs, all my microphone audio and webcam video, my usage patterns, my directory structure, my crashed application incl all related files, the running application list, and sends them encrypted to various cloud servers own by them or third parties (who can tell?).
I thought it is a very simple transaction, but I figured out when a company gets greedy and evil, you cannot trust such a company any more. It's better part ways and to revert back to an older version (Win 7) and prepare to move to a competitor.