Win 7 user also (again).
Tried Win 10 on my home built desktop/game rig. (i7 3770k, GTX 780, 16GB RAM yada yada).
System was rock solid with Win 7 64 bit, can't remember the last time I had a blue screen, or needed to hard reset etc.
Tried Win 10 for a couple of weeks. No complaints during install other than stating I needed to reinstall VMWare, and booted up fine. Steam etc ran okay.
A few days later noticed the system would no longer shut-down. Selecting shut-down would start the process, you'd then be greeted by the shut-down screen with the spinning circle of dots, which would sit there for about 10 minutes. Eventually some time-out would kick in, and the system would reset itself, and so start the boot up process back into Windows! Once in Windows, no errors reported. Only way to shut-down was a hard power off, button of death move. Seemed to be some power management issue (unable to switch something off).
After that it was downhill, drivers failing to load properly, HDDs showing as failing (including a new 3TB one), despite being perfectly okay when view with appropriate tools. Constantly spinning up HDDs that were not in use (I run on SSDs, the HDDs are data storage only, with a few VM images that were not in use). Screen lock-ups, inability to recognise some devices on boot (like the keyboard or mouse), devices dropping out, and back in again as if being unplugged, and so on.
Hit the 'Get me the hell out of here' button under Recovery, to restore my Win 7.
Had to re-do a couple of drivers, and some apps that had updated to their Win 10 versions (which didn't play nice under 7). And of course removed and blocked the appropriate Windows updates, to get rid of the annoying Windows 10 branding that was added to Windows Update.
But once done, I'm back on a rock solid Win 7 system again. I have no plans to go to Win 10 any time soon. If I ever do (first time something comes out on Win 10 only, so maybe in 2021), I'll likely dual-boot.