Hardware variation does not excuse installing your own bloatware and forcing reboots for updates (a changed behavior after a patch). I use windows 10 at work and it's not cool when your PC behaves differently after installing a update. Specifically talking about how they made forced reboots after installing a recent patch. I tend to jot down a lot of things in notepad, and since all our power is covered by battery backup I normally don't have to worry about losing those temporary notes without saving them (unless of course Microsoft chooses to reboot for me). These are not extremely important notes otherwise I would save them it's just extremely frustrating and annoying.
They are making bad choices in the name of profit and nice windows updates stats. While this is something I'd expect from a ad supported OS, I don't expect this for something I paid for.
Lastly I'm not knocking the OS, just recent choices. I think windows 10 is pretty solid as is windows 8.1, but if I'm not vocal about changes I dislike, things will keep heading in the wrong direction.