Not me.
The SP2 install is a big gap for a customer of Windows XP pre-SP2.
First some few free software gurus don't install it because it allow DRM usage in the EULA.
Second it requires to disable Firewalls & Antivirus, and may broke some others applications. Imagine the reaction of a very unknowleagable person (computer-stuff speaking) behind a cryptic webpage saying "hey! I will broke your computer!" -> "Huh? What's this thing?". And I don't think installing updates is a automatism for people who doesn't really understands software developpement process (20% work on product, 80% on updates & stuff). (plus the + or - half an hour installing process...) But I've seen WServer 2003 "First Launch page" and I'm confident for the future.
And installing SP2 on a cracked pre-Sp2 copy of windows is just impossible. I don't say it's good or bad, it's just impossible.
Finally, Sp2 may crash computers, serious people (*I*) have seen it. I don't know why, but it crash.
To be sure, I'm don't saying you may not install SP2, i've installed it and it's the first thing I do when I reinstalled a PC, I'm just explaining why people may not/cannot install SP2.