That's kind of a broad statement. I built a new PC around the time Windows 10 came out and I have multiple Windows tablets around the house, so I installed it on 2 of my machines the week it came out and I love it.

Windows 10 is the best Windows that I've used in terms of UX. My only problems are the privacy issues and the lack of a MouseCornerClipLength setting. I do expect Microsoft to add controls to fix the privacy snafu, but honestly - Android and iOS apps spy more than Windows does. I bet Microsoft has better privacy controls than either of those tired mobile OSes do before long.