Earlier quoted context omitted.
Because the money supply of BTC is fixed, BTC are effectively proxies for the value of the entire economy that they're a part of. When the economy grows by 5%, so does the value of your BTC. It's at the absolute optimimum point of the risk/reward curve: you could hypothetically invest in a way that performs better than the average, but when factoring in the risk, your expected value is slightly worse than if you'd si…
So Keynesian economics forces everyone to invest in order to avoid the inflation tax while Austrian economics encourages saving allowing savers to reap the benefits of deflation. Both serve as proxies for the economy, so tell me again the downside of saving and prices going down over time?
If you sit on money you get from the economy, you are taking it out of the exchange system as long as you don't spend it, which slows exchange.