Then your not getting it.
That "doom and gloom ****" as you called it, is what most people enjoy about the game.
As evidenced by this thread.
They need to stop advancing the timeline, or eventually the game will have to change it's name from "Fallout" to "Restoration"
You know, Fallout, the bad part of what happens after a nuclear war.
Restoration, meaning societies advancing and what-not.
Tell me, what's the name of the game?
Y'know, Fallout doesn't have particularly much actual fallout. Not Fallout 1 and not Fallout 3. None of 'em. Fallout 3 has random patches of radiation for no reason, along with random irradiated water also for no reason, but there's no actual fallout anywhere in the game.
So saying that Fallout has to be pessimistic doom and gloom "nobody can rebuild after 200 years" just because of the name is pretty silly.
And frankly, the "doom and gloom" is harmful to immersion at any point after Fallout 1. Certainly by now, civilization should be getting back on its feet. It took humans less than two hundred years to go from muskets and water wheels to atomic bombs and landing a man on the moon, and that's without the boon of surviving caches of prewar knowledge about.
Really, if Bethesda wanted to have a doom and gloom Fallout game, they should have set it shortly after the war. Setting Fallout 3 when they did was a mistake for the feeling they tried to convey. Not if they wanted to immerse people who actually think about the setting they're playing in, as opposed to people who blithely nod their head in favor of getting to the next lolnuclear explosion.
Personally, I think that the story of the NCR's development is one of the most interesting plot threads in the entire franchise, both because it's interesting in its own right, but also because it's
not stupid like "lol, 200 year old food." Many old school Fallout fans agree with me... And many people who actually think about their games agree with me. It's called verisimilitude. Fallout isn't realistic, but it has to make sense and be internally consistent and logical. Fallout 3's atmosphere fails this test for the time it's supposedly set.