We have always kept a really good store cupboard of foodstuffs. Our parents did before us. It's not for Armageddon or nuclear war but just in case the weather is really bad one winter and it's difficult to get out or if we are both ill and don't fancy trailing to the shops. We could manage for months if need be.
However, as one member (WTWizard?) wrote recently, we never tell anyone.
George