None of you clearly use any form of colour management. On a photography forum this question is a no brainer.
Vista when it pops up a UAC window, or an application crashes and it greys the background clobbers the monitor correction curves. Yes that's right, windows XP didn't provide the option to load video LUT curves from the ICC profile, and Vista takes the glorious leap backwards in actively resetting them every ****ing time you want to do something as basic as install a piece of software.
Forget the other bugs, the slowness, the interface which completely screws your chance of running a computer at any kind of speed with less than 1.5GB of ram while at the same time not supporting more than 3.5GB (another reason not to use it for photo editing, anyone here do panoramas?) .....
I could go on but if the two points above aren't blatently enough to turn you off Vista I would just be wasting my breath. Christie you made the right choice in my opinion. Vista will always have it's supporters, but then so did Windows ME.
Paradigm shift mate. You should be asking who would still run Windows 98 if you could do on it everything that you can do on Windows XP. Maybe one day when Photoshop CS5, directx 10, or another program I desperately need drags me to upgrading by the short and curlies I will join you. The place I work just caved into Vista so I'm forced to there. But if I actually looked forward to that kind of pain I'd join an S&M club. At least it's more fun.
Installing a new system for the privilage of things no longer working and running much slower than they were previously is not something I consider an upgrade.