The thing about Fallout is that you're not really supposed to value the story so much, it's very sparse because it's designed to be very open to interpretation and different gameplay-style. Like, it's an RPG to the bone, it's designed so that you're the one who makes your own stories within the game with how you use people and how you respond to actions etc.
But looking at it, it's a crap system. It's like making an action movie where a guy goes to this building, has a shootout and at the top shoots the head honcho and saves a woman. The plot is extremely minimal, and it's only used to tie the settings and objectives and shit together within the movie, it's throwaway drivel. I don't like it. That's why I'm loving FF13 because the writers designed it so that you'd get lost in a fantasy land seeing the tale of a bunch of guys progress and unfold, same goes to GTA, Dragon Age and MGS. These games are all about immersing yourself in someone else's tale and enjoying the steps you take to get to the end. If the game tries to make you tell the story yourself, not much attachment to characters and the plot is there, d'you know what I mean. All my people right here right now, d'you know what I mean? Yeah. I thought so.