A. You had electricity
B. You had rapid transit
C.You had mass media
D. You had food rations that weren't 200 years old
E. You didn't have mutant animals and humans trying to kill everything.
There are few places after 2077 I'd rather be than pre 77
You are only taking about the Capital Wasteland in Fallout 3, not on the west coast Core Region or the Mojave area.
A. So does most post-war settlements. Many of them have their own power generators as long as they are not tribals living in the wild . Even most towns in the Capital Wasteland can get power from what remains of the the pre-war energy grid.
B. But it was falling apart due to the energy crisis. And the NCR has rebuilt railways and repaired old highways in the Core Region as well.
C. So does the post-war world? If even a dangerous and under developed area like the Capital Wasteland can have 3 radio stations, I will not be surprise if ever major settlement in the West Coast have their own newspaper and radio station.
D. Other then the Capital Wasteland, everyone else is producing their own food and farming has largely recovered. I don't think it is likely that the only food that the people in DC eats are 200 years old potato chips. In Point Lookout you can see that some merchants are importing fresh products into the area.
E. A fair point. But again, in more civilized like NCR territory, the land is mostly under control. And in the months before the Great War, many cities such as Denver and Mexico City were no better off then they were after the war due to the food shortages and riots.