I used to say the same thing. At first it was all too hard to bother with XP, pre-SP1 it was clunky and buggy and crashed a lot under load, and I stuck with 2000 on my music laptop. Now I am using XP; I made myself do it, because now updates are written for XP, then backported to 2000. Eventually support for 2000 will start tapering off. Better to make the leap forward now than down the track.
XP works fine, and I didn't even need to tweak it that much. That laptop rarely connects to the Internet though, it's really just for writing music. I use FreeBSD on my desktop at home.