There are some NPCs that NEVER budge from thier original location (all the hirelings/potential followers) becuase they have a quest for you. There's even one guy in Riften that sits on a bridge all day and night, every day, until you talk to him. Do you know how annoying things like this can be as a thief? And why are children out wandering the streets while their parents are sleeping? Actually that little tidbit is believable, and it's not like all people in real life go to sleep as soon as the clock stikes 12, but still...more often than not, in Skyrim NPCs are just sitting around doing nothing (preventing you from robbing their goods in peace) until you do their damned quest.
So is that where we're headed? A step toward single-player MMOdom? NPCs that are not only un-immersively immortal but stationary just so you absolutely know they're a "quest giver"?