That is a good point.. Maybe we've all become fat, dumb and happy. Complacency is fatal.
People believe that our economic and technological superiority over the rest of the developing world is inevitable.
What has been achieved over centuries could disappear within decades.
Progress is not inevitable.
Elon Musk puts it better...
People are mistaken when they think that technology just automatically improves. It does not automatically improve. It only improves if a lot of people work very hard to make it better, and actually it will, I think, by itself degrade, actually. You look at great civilizations like Ancient Egypt, and they were able to make the pyramids, and they forgot how to do that. And then the Romans, they built these incredible aqueducts. They forgot how to do it.”