Exactly, good RPGs are not just about the main character, it is also about the game world.Because it's impossible for a game to show me the effects my actions will have in a hundred years without a slideshow. If Fallout 2 didn't have the slideshow explain that my diplomatic maneuverings assisted the NCR to become a superpower then there'd have been no point in doing it in the first place.
An instant reaction to my actions is all well and good but I want to know how my actions will affect the future.
It is playing your character and see how it influences that world during the game time-frame and beyond, it is caring for what happens and why it happens.