I don't even like all the pointless changes they made to windows 7, which I have on one machine. I have another that runs Windows 8, and that is the most godawful mess they ever created. Needless to say I won't use that machine.
My first computer was a VIC 20 with 4k memory! I bought the upgrade that gave me 16K.
I learn to write BASIC code (but never was any good at it).
So I have used every Windows version up to WIN 10. I am comfortable with my VISTA and it has all the software I need on it so as long as it works, there is no need to upgrade.