Good, bad, or otherwise -- fast food is part of our legacy. Facing facts is the Atheist way.
It certainly is a big part of our national identity, like you I'm not bragging.
On the other hand it is not terribly difficult to live here and now without it.
One benefit of being vegan and GF is that most fast food, very nearly all of it, is right off the menu. If I enter a fast food restaurant I either need to pee or I want coffee.