I don't see what the big fuss is over service packs. Just a collection of updates to save hours downloading, installing, restarting, a few times when installing a fresh copy of Windows. Sure, in SP2 for XP there were a LOT of changes, but could you imagine how long that'd take installing each of the updates over Windows Update? And of course, you'd get users saying "Hey, I don't want no Windows firewall, innit, or any of these other updates".
I don't remember so much fuss over service packs prior to xp's SP2. Just a collection of updates, people!