Counterpoint: people usually donate canned goods that they bought thinking they would consume it, but no longer want. Oftentimes, if you go to costco or other l

Counterpoint: people usually donate canned goods that they bought thinking they would consume it, but no longer want. Oftentimes, if you go to costco or other large warehouse store, you buy a box of cans, and then you may get tired of it. These unused cans accumulate, and there is zero marginal cost to donating them. Otherwise, they'd just be tossed.