I started using Windows 2000 when it was a remarkably stable beta, 10 years ago this month. The bank across the street still uses it on every PC. So do a lot of other corporate computers.
But that’s OK. Most PCs now run Windows XP, which is “only” 7.5 years old. (It came with Internet Explorer 6, which is also still in widespread use.)
Most people don’t keep cars for this long.