Oh, and one thing to note, if every *anything* we viewed as a nicety, not a necessity, were destroyed tomorrow, never to be remade, it would have a profound effect. If every baseball glove were destroyed tomorrow, the financial impact would be staggering. No MLB contributing to the economy? no summer sports entertainment?
If every piano were destroyed, we would no longer hear live performances of Gershwin's "Rhapsody in Blue." And the orchestras on broadway would be unable to perform the musicals currently running there. That would be a financial hit to NYC, maybe not as huge as baseball, but still.
And what if every TV set were destroyed tomorrow? We can live, individually, without TVs, but Hollywood would be decimated. Movies cost much more to make than TV shows, and don't rake in near the cash as TV does as a percentage of investment.
Thucy - you are young yet and need to think about *every* possible use for a given item or job before declaring it silly or having a minimal impact on society and the balance sheets of the world's various economies. Just realize that there are more things in Heaven and Hell, Thucydides, than are dreamt of in your philosophy.