Most individuals (especially kids) have little notion of how to make food: grow veggies, fruit, animals. Those of us who do some of that sort of stuff already, would be hard pressed to accomplish it in the absence of complex infrastructure (mail, seed sellers, electricity, public water supply, ready-cut lumber, the Internet, etc.). My teenage grandkids have no interest in learning how to make food.
Without jumping into the morass of why our weather is different than we remember from years past, I will say that we must recognize that weather patterns around the world are now less predictable, more extreme, and more wildly variable. Modern civilization is built upon predictability, relative stability, and fragile supply chains. The elastic in our socks no longer keeps them up.
Today (first full moon after the vernal equinox) is the start of the Jewish holiday of Passover. It is a cultural remembrance of events related in the book of Exodus (written centuries after the fact). More specifically, it is a cultural remembrance of a snapshot taken during the (simultaneous) late Bronze Age collapse of nearly all Mediterranean and Middle Eastern civilizations around the year 1180 BCE (about 3000 years ago). It would take another a half-millennium for civilization to once again stabilize from that wreckage.
Bob