I remember reading, once, an article by a prepper who'd been thinking about about buying another set of guns.
He was a disciple of Mel Tappan who argued that everyone should a a battle rifle, a combat pistol, a shotgun, etc., for each adult and responsible child in the household, and a spare set for guests.
He was thinking about buying a second spare set.
Then he realized that for the same money he could buy enough food to feed everyone who lived within ten miles for a year.
Truth is, WTSHTF, it's relationships that count most. Having friends and neighbors you can count on for help, and who can count on you.