Newer != Better
Xp is a robust system and as others have said if it goes nowhere near the Internet and isn't fed USB dongles and dodgy CDROMs whats the issue?
XP is probably the only OS that I couldn't manage to BSOD (Even NT wasn't that hard to screw up if you had a dodgy device driver)
Adding more code (and probably more bugs and holes) and making an OS look 'flat' or 'modern' doesn't always equate to better.
Biting the hand that feeds IT
