You can buy a better computer by waiting. Does that stop you from buying computers? It does in practice, actually. But there is always some portion of the mark

You can buy a better computer by waiting. Does that stop you from buying computers? It does in practice, actually. But there is always some portion of the market that needs the better system now. That is much less true of Bitcoin, which is mostly held for speculation rather than as a currency. People who are forced to "spend" Bitcoin are people who want to realize their speculative gain and exchange it for dollars, which they then use as currency because it's still vastly more convenient than Bitcoin.