I've pretty much gotten used to Windows 10 at this point, and there are even a couple of minor UI tweaks that I miss when I use my Windows 7 machine at work. What frustrates you?
Windows 10 updates frustrate a lot of people. It will attempt it when you have a bad wifi connection and make the internet unreachable, or it will reboot when you're in the middle of something. And woe if you run out of battery power in the middle of the update... I'd rather have more control.
