You could and should ask the same question about stock shares - and indeed there’s an entire profession with centuries of history around that – but it’s a funda

You could and should ask the same question about stock shares - and indeed there’s an entire profession with centuries of history around that – but it’s a fundamental error to ignore magnitude. The stock market is based on real value and that avoids wild swings when nothing has fundamentally changed - even through the mortgage bubble my portfolio made made gains because people still needed to buy food, cars, phones, clothing, etc. and if did even a little research it had been easy to spot companies whose fundamentals didn’t support their valuation. In contrast, a pure fiat currency like bitcoin has value only from social consensus and has far more volatility.