FWIW, I have been operating on Win7 as my production OS for several months -- currently have the RTM version installed on two computers and works flawlessly -- even have MS OFfice 2010 mondo working with very few hitches. In both cases I used the "upgrade" approach so I could keep basically the same software and setup -- aside from a couple of Lenovo thinkpad utilities it didn't like, my ThinkPad upgraded w/o any problems and is working as smoothily as it ever did on Vista or XP. My Samsung Q1U UMPC had no compatibility issues and upgraded easily and flawlessly. This experience and the nearly 100% positive experience I've had in going through 5-6 beta/RC upgrades convinced me that Win7 willl be a far easier upgrade for most people than Vista was. As for the OS performance its speed and ease of use (even in beta form) sold me very early on this being my choice OS.
I've used 7 for several months and got a similar impression. However, I do not feel it is
so much faster than Vista x64, and also keep in mind you probably have fewer programs and fewer drivers installed on it, therefore fewer services, why 7 may behave "faster."
As for the thread's and article's title, not everyone will upgrade to 7 as there have been users who decided to skip Vista and there are users who'll skip 7 and stay with XP. Why ? Simple:
1. XP is compattible with most software, yet more compattible that vista/7
2. XP is fast enough
3. XP really lacks no serious features
4. No need of all that florid Aero with Vista or 7, neither of a number of other features like superfetch - if you're really working or gaming you don't have time for all those revolutionary briliances
So, one may want or not want to upgrade, just like buying a new car - maybe you'll buy it, maybe not.
Server 2008 Sp 2 x 64
7 Build 7201 x 64