The mysteries of packaging

I sometimes wonder at the amount of packaging for certain products and how they are packaged. Why do they stuff paper inside shoes, for example? Why do plastic fruit juice containers have seals which need to be prised open with a crowbar? Why do electronic gadgets come in plastic that’s harder to open than a medieval maiden’s chastity belt? Why does a tub of noodles, which is adequately sealed, have an extra layer of flimsy plastic to get through before you can remove the cover? Sigh.