As traditional financial instruments become increasingly volatile, people start turning towards more experimental assets like Bitcoin and other cryptocurrencies.

Conversely, when the traditional markets are stable, other higher risk assets are scarcely considered, since most people favor low risk, low reward, over high risk and high reward.

If you actually look at the purchasing power of USD over the last hundred years, it has fallen drastically. First due to counterfeiting, but also due to some of the anti-inflation measures that the government put out recently, like quantitative easing. Bitcoin's purchasing power has only gone up, and now exceeds all other currencies in this regard.

Even at its lowest point in the last few years, Bitcoin's PP has beaten practically every single other mode of investment at the same time.