There's a catastrophe every generation that turns out to have been a false alarm by the time the next generation's catastrophe is fabricated.
For instance, my wife was told "no homework tonight since we'll all be dead tomorrow anyway." (Cuban Missile Crisis)
Around the time of the first Earth Day, the predictions of environmental apocalypse were legion, yet societies somehow seem to find ways to fix things that societies broke. They also seem to find ways to fix things that tyrants broke.
When you see dozens of such dire predictions over a lifetime, you start to get skeptical. Skepticism is a good thing, btw. Without it, there wouldn't be any science.