I still think 10 is a waste of space and would be using only linux or 7 if not for gamepass (old distant friends have xboxes only). I still run 7 on my living room PC and its honestly a better experience then 10. If not for end of life (that lets face it are mostly arbitrary at this point) there is little reason to upgrade, even the few things not in things 7 or 10 (like auto HDR support or new Direct X) are simply withheld for no reason and often people have worked out how make it work anyway.
I am old enough to remember how each new windows addressed a flaw in the last (even if that flaw was made up). Here is off the top of my head some examples (leaving out the better NT line) :
- Windows 95: Upgrade from 3.1 in most ways, first time dos was really secondary.
- Windows 98: Much better USB support and more "plug and play"
- Windows ME: Fixed the issue of people having hard drive space.
- Windows XP: Massive upgrade in supported hardware, usability etc.
- Windows Vista: People thought this sucked (it did) but the main reason was that it (and x64 XP) supported more then 4 gigs of ram.
- Windows 7: Was not Vista and much more efficient.
- Windows 8: Fixed the perceived flaw that your PC should really be a phone for some reason?
- Windows 9: DAMN IT MICROSOFT LEARN TO COUNT!
- Windows 10: Was not a Phone OS. Things like gamepass are supported. Told this was the last windows.