One thing a lot of people don't realise is that supermarkets and similar shops don't have storerooms anymore. They simply have loading bays. Everything is stored centrally at their distribution centres or preferably at their supplier's warehouses near the central distribution centre. I think woolies has them in brisbane and albury for example. We rely on transport [roads, fuel, and drivers] to get everything from far away. If one of those cogs fails then we have nothing. Imagine an epidemic that takes 50% of truckies off the road? Imagine another oil crisis that takes trucks off the road? Our food distribution system is very vulnerable and will let us down eventually, so food is at the top of my list of things to be independent for if the need arises - both short term and long term. I can cope without power and without fuel quite well, but food is kinda essential.