Vista isn't "bad" at all.
I just can't justify using a piece of software that is considerably bloated and takes a powerhouse of a computer to run. And even still with a lot of computers that are coming out with Vista preloaded, even with 2gb of ram, I can't even tolerate the slowness it sometimes exhibits.
I gave it a shot. Really, I was on here too saying about how great it was if you just gave it a chance. A stab in the dark at trying XP again proved that entire theory wrong.
It has potential. I'm sure in the future I'll be a solid Vista user (aside from my Linux homeland). But... right now? XP just offers so much more stability and efficiency, it's crazy for me to justify the use of Vista right now.