If the disaster is bad enough you only have to survive off of your hoard until enough other people die off that one can scavenge. COVID showed us how brittle JIT supply chains are. How many people die in 3 months without access to daily medication? How many broken arms or ankles go septic or heal badly? How many staph infections, bad teeth, tetanus, botulism or whatever that used to kill and now we can get ready treatment for? Just got to stay in the bunker until all the more dependent and unlucky die then you can come out and spend the rest of your short life fighting over the remains of technological civilization with the other preppers.
If the disaster is bad enough you only have to survive off of your hoard until enough other people die off that one can scavenge. COVID showed us how brittle JIT supply chains are. How many people die in 3 months without access to daily medication? How many broken arms or ankles go septic or heal badly? How many staph infections, bad teeth, tetanus, botulism or whatever that used to kill and now we can get ready treatment for? Just got to stay in the bunker until all the more dependent and unlucky die then you can come out and spend the rest of your short life fighting over the remains of technological civilization with the other preppers.