10 is way too pushy. They force it on you and they want to be able to spy on you. I'm not interested in that. 8 was way too much of a change to the environment for me. And the stuff I run works perfectly well on 7. So I'm happy there. Maybe 11 will dazzle me. I doubt it. I only use Windows for apps that are necessary there because they don't have a Mac native version.
I hear you about 10. I accepted and took the upgrade to 10 when they offered it to me, and then the very next day, I took them up on their offer to go back to the 7 I had on my laptop and the 8.1 on my PC. The biggest issue I had (but certainly not the only) with 10, is for the updates, with NOT having the option to decide which ones to install, nor when to install them. It was all done automatically, whether you wanted it to do or not, and whenever Windows wanted it done, not when I choose to install them. DOH!!
I even went to their comments section about it, and the majority of the complaints at that time, were about this same issue. There was also no hint that Windows was going to change the way they did the updates for 10, which made my decision to go back to the earlier version all that much easier and quicker. LOL