There are serious problems even stockpiling a decade worth of most of these items.
Most of the items in your list do actually expire. Many household cleaners degrade over time, rubber gloves perish, band-aids develop adhesive problems (such as becoming unrecoverably bonded to their packaging), and all of the things you listed in “if these never expire” do actually expire, except some pharmaceuticals. It is not easy to find out which ones, and if your findings are incorrect you could die. Bar soap isn’t too bad, but some varieties can either deliquesce from humidity or crack and powder. Liquid soaps and shampoos can degrade in as little as a year. Toilet paper is bulky. For things like screws and nails, you can keep quite a stockpile but you will definitely not know how many of which types you’re going to need 50 years in advance.
These are just some of the things I’ve noticed so far in my life without even trying to stockpile. I expect there are websites devoted to things like long-term fallout shelters and such that will have a lot more detail on the things that can go wrong with maintaining 20+ year supplies of everyday things.
There are serious problems even stockpiling a decade worth of most of these items.
Most of the items in your list do actually expire. Many household cleaners degrade over time, rubber gloves perish, band-aids develop adhesive problems (such as becoming unrecoverably bonded to their packaging), and all of the things you listed in “if these never expire” do actually expire, except some pharmaceuticals. It is not easy to find out which ones, and if your findings are incorrect you could die. Bar soap isn’t too bad, but some varieties can either deliquesce from humidity or crack and powder. Liquid soaps and shampoos can degrade in as little as a year. Toilet paper is bulky. For things like screws and nails, you can keep quite a stockpile but you will definitely not know how many of which types you’re going to need 50 years in advance.
These are just some of the things I’ve noticed so far in my life without even trying to stockpile. I expect there are websites devoted to things like long-term fallout shelters and such that will have a lot more detail on the things that can go wrong with maintaining 20+ year supplies of everyday things.