I like Windows 7, and still have one system running that. I like Windows 10, and have two machines running that now. I avoided Vista. My laptop came with Windows 8.1 pre-installed ... WTF was Microsoft thinking with that? It would be cool if the OS could change GUI mode if you plugged in a touchscreen, but the majority of PC users still use a mouse and keyboard. So building a PC OS around the metaphor of mobile and touchscreen? Ridiculous!!!
So the laptop was my first plunge into Windows 10, because I could no longer stand the Windows 8 interface getting in my way.
But I have to say, Windows 10 is what Win 8 should have been to begin with. Although I must say that it does take some time and effort to tame the Windows 10 privacy and update settings ... YMMV. But for me it is stable and fast.
And I do have an old laptop that still runs Win XP. Plus a virtual machine (VM) instance of XP as well. They don't often see the light of day, but I have a few older programs that refuse to install or run on Win 10, so I can still use them if needed.