I switched to Linux with the release of XP. Later versions of XP (SP2 and 3) were better with their service packs offering new features that really should have been in vanilla XP. But the original release of XP was slower than Windows 2000, uglier than Windows 2000 and required twice as much system resources as Windows 2000 while offering literally nothing in return aside a little more compatibility for gaming. But since all of the Windows games I played already supported Windows 2000 (bar the DOS games but I kept Win95 about for DOS games) there was no benefit in upgrading to XP. So I switched to Linux instead.

So it's been nearly 20 years running Linux and honestly I've never once missed Windows. I've never got people who said "I can't run x" because everything I've needed to work has worked or there has been some open source alternative that has worked equally well. And if I really needed a corporate platform there was always OSX. Unfortunately macOS these days is becoming a similar cesspool as Windows. Before long the only good operating systems left will ironically be the free ones.