The W10 upgrade wrecked my laptop, the day after the 30 day window where I could roll back to W8. I spent hours and hours over a week trying to sort W10. Numerous installs/re-installs and trying different drivers. I even took it to a local repiar shop, Micro Center, and they said the W10 install was fine. Nope, a BSOD at some point every time I turned on the laptop. I used DBAN to scrub the drive and installed Ubuntu Mate. This month marks my 2 year anniversary of DBANing Windows and switching to Linux.
I have a Garmin watch for tracking runs/GPS that requires Windows or Mac for firmware updates, but these are rare. I occasionally plug in my 10yr+ Dell box with W7 to do updates. This was my first computer, originally bout with Vista installed, and keep it around for sentimental reasons. I’ve also installed a Hackintosh on a separate SSD in my Linux box, but I rarely use it.