Time? Time is our most irreplaceable asset — we cannot buy more of it. We cannot get a second of it back. We can only hope to waste as little as possible. Yet somehow we treat it as most renewable of all resources.
At a high level, this example shows two important points. The first is that all of the circulating coins get used by all of the current demand for them. Coins don’t go unused; if we add extra coins to the circulating supply, then the price per coin will fall until they’re all in use. The second point is that the total value of the coins will equal the underlying value that people get from them. If the coins will be used for something worth $4, then market forces will drive the total value of those coins to $4.