I recently had the pleasure of checking in on Windows for the second time in 7 years. I had been a PC user since the DOS days, starting on a 286, and going all the way to Windows 8 when I switched to Macs around 2010. I've only ever needed Windows for games since then, and decided to install Boot Camp on the 15" 2016 MacBook Pro that I just got (which happens to be a pretty good machine [1], all in all, and runs Paragon [2] in high detail at 1920x1080 60 FPS; enough for me.)
There is still so much wrong with Windows I honestly don't know where to begin. The UI remains a convoluted Escher'esque nightmare. Apple and macOS are still FAR from fucking up badly enough to make me want to willingly head back to Microsoft.
I am running both Sierra and the latest version of Windows 10 side-by-side (with Parallels Desktop) so the differences are very glaring and obvious. Maybe I'll write up an in-depth comparison later.