I am not a fan of the design inconsistencies or the apparent desire within Microsoft to change the entire GUI style every 5 minutes, but the way Windows has turned into bloated AF adware/spyware has been the main force behind me moving to Linux. I would have been happy with Windows XP forever if they just kept updating DirectX etc.

My other major annoyance is how Windows Update now forces itself on you, forces a reboot, then takes forever, and of course will randomly fail to apply the updates. Whereas with Linux, the updates just.... work. And they don't take half an hour to do nothing.