When I told my husband I had install Windows 10 he laughed and said Good Luck. He's an IT guy.
I hated it at first, couldn't access my photo records , send pictures to my blog etc. But we persevered. Its a process of going through EVERY setting that can be calibrated and making sure you're recognized as the administrator of this new program. He's obsessed with privacy so I ( we) look long and hard at every issue that comes up. Yeah, there are some annoying things but its just a question of changing old habits for some of them. And I consider myself a Techno-peasant.
Un installing is not as easy as it sounds. Good Luck.