As a Web developer and Internet Citizen (TM), I can't wait for Facebook to complete their AOL-ification, which will surely include its eventual death spiral.
Rage-deleted my account after getting tired of being constantly presented with reminders of parts of my life that should have been moved-on-from, except Facebook decides what parts of your life you should be seeing.
If Facebook hadn't steamrolled Evite due to the sheer percentage of general population with accounts, I don't think I'd have any regrets whatsoever. People have to go out of their way to invite me to things, which has definitely had an effect on my specific social network.