Why upgrade, Windows7 does everything I need.
Good for you. However, you won't be too happy when you get a new machine that doesn't come with anything other than 9. Or when your windows 7 drivers need an update to fix a bug or add a feature and the only available ones are for Windows 9. Or you want that snazzy new program and it's minimum requirements are Windows 9.
Like it or not, the world moves on. If standing still works for you then more power to you.
XP still works for me. There is no downside. Snazzy new features don't improve my efficiency at work.
I agree, when a computer breaks and we have to get Windows 7 because we are forced to, a painful upgrade period occurs because the software never seems to work on the new OS. There is no advantage except for the newer hardware computation power. Who cares about Windows 9?