This piece on preppers is interesting, and I've seen the National Geographic show a few times.
I remember being on retreat in Crestone next door to some preppers who started talking quite "innocently" (at least innocently enough) to their lodger about how to shoot a bear. 30 minutes later it was what part of the black man's head to aim for when the looters come from the big city after civilization collapses...
I have a theory. Prepping is only consciously oriented to an apocalyptic future. In reality, it is an atavistic reaction to a world that has already ended (Anthropocene, hyperobjects--and let's not forget, America ceasing to be a frontier pioneer white settlers against everyone else in a circle). It's a reaction to an apocalypse that has already occurred.