It is in the interest of someone who uses money as a means of exchange and not as a store of value (which is the overwhelming majority of individuals) to reject crypto-currencies in favour of fiat currency.
Your average citizen gains nothing from adopting a currency that is highly volatile, concentrated in the hands of a few, and awful at completing everyday transactions.
Maybe, but those problems are not necessarily permanent, and it can be valuable without targeting the "average citizen." As a counterpoint to your "gains nothing" view, many "average citizens" used bitcoin for transactions in the early days, only to find out that holding some of their currency in bitcoin made them rich, so they did gain something. Even if that is only a small possibility, the possibility is still there.
Confirming that it is preferable to "HODL" than spend this currency...and any gains were at the cost of new bagholders who in turn expected to sell their coins for an even higher price.
A currency is something people want as means of exchanging goods and services, an investment instrument isn't that.
And crypto has performed terribly as an investment instrument as well...can you imagine the chaos if the stock market swung 5-15% from one week to the next for months on end?
Lastly you're conveniently ignoring that stocks can pay dividends, and don't serve only as a speculative asset... Because publicly traded companies generally produce something useful and of tangible value to society, unlike cryptocurrency projects.
The Bretton Woods System ended under Nixon to prop up the military ambitions of this nation, bad move using debt to start pointless wars. Current monetary system structure is deeply flawed, until reform BTFD in BTC.
Note: If you don't feel like paying for the next war, it's a nice bonus in BTC's favor.
This may or may not be the case, but regardless, individual decisions are usually made based on an individual's self-interest rather than the warm fuzzy feelings about helping society.
> Cryptocurrencies are not a means of exchange.
It is not necessarily true that that will remain the case. Either way, that doesn't matter if society coalesces around one of them as the "WorldWide Ledger" because individuals are incentivized to avoid inflation.