Well you yourself are also a common factor![]()
I find it exceptionally difficult to believe that I have the touch of death for Windows boxes, be they me-built, Dell, Lenovo, VM, or Boot Camp. I don't ask a tremendous amount from them, and I don't use them for normal vectors that can introduce stability & security issues.
Seriously though, when and how often do you get a bluescreen or have seen a bluescreen on your own machines?
Often enough to be annoying, and far more often than I get kernel panics. But it's not about BSODs. Those are relatively rare in modern computing. This isn't NT4, after all.
It's more about real world use of the Windows & Mac OS X operating systems. It's more about bad behavior of the OS, when opening or closing applications, windows, etc and the system stop responding.
Do you build good machines? All these problems can be easily related to poor hardware.
I build the best I can, and yes they can. But the basis here is that Microsoft is in a position where it tries to help developers of cheap and ****** hardware run with Windows. This is admirable of Microsoft to be as compatible as possible.
But this is diluting the original question about Windows "residue" versus Mac OS X "residue". And despite what you say, normal use, over time, does seem to end up with Windows boxes being slow, unresponsive, and flaky. Unfortunately, most people don't know how or don't want to bother with troubleshooting and they end up just reinstalling Windows. This becomes habit, FUD, and habits/FUD spread.
And now, you have people who do annual reinstalls of Windows in order to "speed up" their computer. This is not isolated behavior.