I don't eat anything frozen or tinned (except soup very rarely), don't even have a freezer. Happy to admit my plan is based on society not collapsing. When I think of all the contingencies one needs to plan for that is way, way down the list of priorities.

In any case the plan is flawed. Society collapses, you have 3 weeks of food stored, very good. What do you do when that runs out? Go into the woods and live on leaves and berries? Just postponing the inevitable is not a plan.