I upgraded my home PC to Windows 10 because I support distance learning students at a college and knew they'd be showing up with laptops with Windows 10 preinstalled. The upgrade fiasco was totally unexpected.
From my POV, I'm not even clear what's different from 7 and 8.1. I mean, I *know* the UI has changed considerably in a lot of places but that's just where you find buttons. Similarly, I have no interest in Modern/Metro Apps or whatever they're called. As long as I can use Explorer to manage my files, launch Chrome to get online and my games work and the software I rely on work (Office, some assorted productivity/video editing software), I really don't care. And all of those things have worked fine between 7/8/8.1/10. I've seen no performance decrease in my path from 7 -> 10.
At some point a file versioning tool showed up in Windows, and it still works in 10, so I guess that's good? The Task Manager seems much improved? I like the flat theme just fine?
Really, I can't help but be reminded of this: https://xkcd.com/934/