To have and to hold

Collecting is one of the most common pastimes, and can often become a passion bordering on the obsessive. Our familiarity with the pursuit, however, obscures the questions at its heart: why do people amass things that have no use? What drives them to spend time and money getting hold of a single stamp, an unusual beermat, or a rare doll, only to put it in a folder or on a shelf? Why do we feel the need to possess these items, and why is it not enough to know that they exist in a museum, or somewhere else?