I hear people complaining about this alot... how is an iPad suppose to save all of that data?
If it's anything that comes close to saving all the settings, apps, photo's, music, and iMessages, profiles would eventually become way to big. It would probably then become a feature unavailable for 16GB users at the very least, because that's never going to cut it. But still 32 and 64GB are tight spots. You need to think this all the way through, I am certain apple has thinkered with the idea, but if Windows is any indication, have user profiles grow and grow leads to very bad things.