An extreme personal observation of this was my grandmother, who grew up during the Great Depression with 9 siblings. They managed better than most and helped out neighbors (having both land and descending from farmers); she would in her later years (when I knew her) have massive stockpiles of processed long-shelf life food stored everywhere. Also, all the pickled/preserved food from her garden that was left over. For the longest time, I thought it was common to have multiple freezers, and a couple fridges, in a garage stocked with food. Including, months old leftovers from cooking enough of whatever soup/stew for 4-5 full families.