I'm quite happy to use Windows 10 although I don't trust it. It's very reliable on the whole and you can use software of a quality that just isn't available for linux. My trust issues stem from trouble after upgrades with previous versions of Windows - it's almost as if I'm waiting for Windows 10 to let me down! Furthermore, I have privacy issues; Cortana makes me very edgy (so I don't have a microphone attached to my PC) and I wonder what a company that can produce that sort of software has my computer running surreptitiously under the hood.
You might find this useful:
https://www.pcworld.com/article/2971725/windows/how-to-reclaim-your-privacy-in-windows-10-piece-by-piece.html
