Suppose you were near a abandoned rail line. There was all kinds of stuff along the old roadbed. Cool things that a model railroader would take good care of and cherish. Things that are no longer the property of anyone and will eventually just rust into nothing or be torn out and dropped in a dump. Objects of antiquity that only a railroad fan could appreciate. Would you gather some relics even though they are not yours. Would you justify it by telling yourself you are preserving a 100 year old object that belongs to no one? At what point does something become part of the bounty of the world like a deer that one shoots and eats, or wild mushrooms one takes from a woodland? Just curious.