Don't go shopping with an impending zombie apocalypse.
Anyone from Brisbane remember going to Coles and Woolies when the 2011 Brisbane Floods were occurring. It was insane. Panic buying. Shelves cleaned out. Trolley lines reaching to the back of the store.
Anyhoo. Try living in countries without nice supermarkets. Everytime I come back to Oz I have a near orgasmic experience shopping in Coles and Woolies. Be thankful you have Coles and Woolies.