Multiple users are not a common use-case. Everyone* over the age of 12 has their own phone. I doubt Apple will add that feature anytime soon.
*By everyone I mean the majority of people in first world countries, some second, and third.
*By everyone I mean the majority of people in first world countries, some second, and third.
As for this feature request, I think it makes sense... I wouldn't want my kid tapping on my work email or social apps.
I wouldn't even mind having a sync server in the house (a desktop mac, maybe) to help with that.