Hm, Moonbow. For every quid/buck spent, an item should be worn. Ever notice that seems to be inversely proportionate? I, for one, buy cheap clothes and wear them til they fall to bits. But cards, they last lots longer!
Hunter, if I would throw out footwear that's full of holes or otherwise not useful, the growing deck collection would more closely resemble the shrinking shoe collection. Work boots, gumboots, grip-the-snow-and-ice boots; snug, flexible rock-climbing/hiking boots; two pairs of Croc rip-offs, but they're foot-friendly and good in the house; two pairs suede slipper-like outdoor shoes that can go from climbing to civilized...that makes eight useful pairs for different purposes. At the moment, I have seven decks either in hand or on order. And I think of them as useful for different purposes, too, depending on one's mood for reading or study.
Nisaba, right you are. One can only hang up so many paintings. But cards! Worthwhile for the artwork alone.