What we need to understand is, one, that there are market failures; and two, that there are things like asset bubbles and irrational exuberance. There are periods of booms, bubbles, and manias. These things, if left to themselves, can lead to crashes, to busts, to panics.
Nouriel RoubiniGold has no increasing value. And if you're really worried about, say, inflation rising, I would buy Spam. You know, you can eat Spam. You cannot eat gold.
Nouriel Roubini