I reckon supermarkets very cleverly hype us up to buy 'bargains' of enormous bulk. Those huge freezers people have are indeed crammed with ancient meat etc. My neighbour next door to my old house used to do this. She had lumps of meat that had been in the freezer SEVEN YEARS! And FOUR frozen turkeys! Our freezer is very small and fits under the counter. Once a month I empty it, review the contents, defrost and wash it out. Any food left in is eaten, then we restock it.