...We are not talking here about collecting things that are valuable or important such as art, coins, or stamps....

At what point would society bring it upon itself to place a dollar amount of "acceptable minimal value" so as to catagorize specific things as "ridiculously larger quantities than would ever be necessary"? Dog dibrof! "Supply siders" may have something to say about this... as if you couldn't have too much coin, stamps or artwork.

You need a lot of bottle caps to get a dollars worth of metal.

The militaries seem to have a lot higher limit on.... well, at least nuclear weapons, for example. When does stockpiling become hoarding? When does collecting become stockpiling. When does having a lot become collecting? How much does one need to afford to share.

Having enough makes me feel*rich.