There seems to be a large number of people who almost look forward to having their favorite (post-)apocalyptic movie/video-game becoming reality.In times of prosperous peace, most struggle is crazy making pecking order BS. Are you doing better than your neighbor? Who is number one on this list? What does it pay?
During times when the world at large isn't trying to kill us all, hell is other people. Hell is being at the bottom of the heap because society will make sure that's a terrible place to be even if there is no objective reason that it needs to be.
During a real crisis, that crap tends to mostly drop away. Suddenly, people with money are willing to share it with those who have less those with less aren't treated like they must not be trying hard enough and clearly don't deserve better.
We revert to absolute measures rather than relative measures. Instead of "Do I have more or less than other people?" we ask "Did I get what I actually needed today?"
It's very rare for big change that kills off the most awful aspects of our lives to come some big positive change. It's almost always a disaster that leads to such.
Those dystopian fantasies very often include the idea of a sense of community and pulling together in the aftermath that is generally lacking in the lives of most modern people in developed countries. We seem to be unable to imagine creating a sense of community in the face of plenty.
Longing for community seems to be a primary reason to have such fantasies.