1. 64 bit that doesn't suffer from additional compatibility issues.
My friend didn't get The Neverhood running on his 64bit version, but on my 32bit XP it works fine. Guess what? The game is from 1994!
2. More secure from malicious attacks.
Mine is secure even against my own virus tests
3. More stable from accidents
XP never crashed on me.
4. It's very easy to reinstall Windows 7 without reformatting.
Partitions exist for a reason
5. Windows 7 supports Direct X 10/11
XP supports 10 and 11 on my PC.
6. Windows 7 supports Internet Explorer 9
I'm sticking with Chrome (before, I used IE6)
7. Windows 7 supports several new APIs used in the building of programs such as IE9 that will inevitably cause OTHER programs to abandon XP too.
And I should care... why?
8. Windows 7 will be supported longer.
Yawn, 98 and XP aren't supported, why should I care about 7? It'll last about 6 years.
9. Windows 7 has UAC
Yawn.
10. Windows 7 has ASLR (MAJOR advancement in security XP will never have)
Yawn.