It is actually good. I've been using Windows 10 since the software went live globally. The issues are very small, minimal, and I see a lot of quality in the updates. This is coming from a guy who's been around since the Windows 95 days. I saw Windows XP glitches, quirks, hacks - yes, hacks. Viruses, Trojan Horses, you name it. I saw everything. Vista was the worst software I've ever seen. It had too many holes in it. Both on a personal computer, and on a student station... Horrible. Windows 7 was a little better, but my only issues was the changes. Windows 10 though? You'll be surprised by how good everything is.
Vista and 7 are essentially the same thing, it was just rebranded and had a new theme slapped on it. It's very interesting how many people see it as something completely different.
It's just that the pieces of software which ran on 7 actually supported it, as did the hardware, unlike Vista which came in after a very long period of nothing but XP.
Microsoft's biggest mistake there was the length of time they spent developing Vista.
Windows 10 on the other-hand had the whole upgrade nonsense which screwed up just about every machine which opted into it in some way. They're probably trying to force people to buy a new machine and fresh copy of 10.