Unlike stocks, whose underlying companies reflect a volatile price, art usually appreciates steadily with time. If you have chosen the pieces in your collection wisely, sometime down the road your art is likely to be worth considerably more than what you paid for it.
Stock market corrections, volatility, and other financial fluctuations are non-existent in the art world. This is seen as one of the biggest advantages to investing in art. The collector can sleep peacefully at night, without the worries that plague other investors.