Except the bank interest still doesn't beat inflation, let alone the rate of M2 increase. Chase offers 0.1% on savings accounts right now, which would be pointless to me.
It's more difficult just to hold onto wealth than most people see. It'd be nice if everyone holding the currency weren't implicitly taxed through dilution, forcing them to passively invest, creating bubbles... and still being taxed on the so-called gains. These passive investments are more about stashing wealth in something with a limited supply (stocks etc) than about the actual business they're investing in, making them not all that different from the concept of a broadly-adopted cryptocurrency. Difference is they have to keep fleeing from one "save haven" to another as the money moves and the bubbles pop.
It's more difficult just to hold onto wealth than most people see. It'd be nice if everyone holding the currency weren't implicitly taxed through dilution, forcing them to passively invest, creating bubbles... and still being taxed on the so-called gains. These passive investments are more about stashing wealth in something with a limited supply (stocks etc) than about the actual business they're investing in, making them not all that different from the concept of a broadly-adopted cryptocurrency. Difference is they have to keep fleeing from one "save haven" to another as the money moves and the bubbles pop.