"There will be a big economic depression. People will lose their jobs, be stuck in the suburbs unable to buy food, etc."
-genericbikedude

I think the 'hope through economic depression' thing is based on the idea that usually being 'down and out' makes one appreciate things more, and puts things in a well-needed, different perspective.

Although I somewhat agree with the rest of your paragraph, I think you are underestimating the world's reliance on oil. (especially the united states)