Any compelling reasons for upgrading Vista to Windows 7

I have been running Windows 7 at home now since the beta and have been loving it. I definitely think its an improvement in speed, reliability, ease of use and overall productivity over Vista and especially XP (used Vista for about a year before 7, and XP still at work). At work I find myself missing many features on my XP machine that I use often at home. What are some of these features? Check out these topics:

• What can be done in Windows 7 that can’t be done in Windows XP?
• Windows 7 tips and tricks
• Windows 7 Features Not Found In Previous Versions

It's supposed to be a great service pack, see here.

Compelling reason? That depends on you I suppose. I didn't have a great experience with Vista, so I stuck with XP and Server 2008 as my primary environments. But, I have really enjoyed Windows 7 to the point where I feel comfortable leaving XP behind. Meanwhile, check out Features new to Windows 7 and see if, for you, any of those is compelling. :)