I had it, but returned to Win 7. 10 had no support for my dvd player/recorder and no Media player. Microsoft wanted to push me to their music player and I have nearly 200 Gb of music files that I won't risk being rendered unusable. I know I could use VLC or some other software to fix the problem, but I'm OK with Win 7. I game a lot (first person shooters) and I am concerned that rumor is you need to upgrade to 10 to be able to run DirectX 12, so I may be forced to change if future games require 12. (and I have little doubt, they will)
As far as having problems, Microsoft has made it very easy to roll back to your former version. My brother in law lives in Thailand and uses his PC for streaming American NFL, e-mailing, sending pictures and the like. He is running Win 98! He has NEVER done an update and seems to have no problems. Sounds crazy, but true, lol