off the top of my head: DeFi, NFT's, data storage, services for the bankless, decentralized metaverses, insurance, synthetics, music streaming, video streaming, social networks, DAO's, social money
I see plenty of value in many of those issues. Some appear to be just jargon or beg the question. I see zero evidence that cryptocurrency is necessary or even beneficial in solving any of those problems.
I don't think my, or any, national currency is secure forever, but neither is any cryptocurrency. Currently national currencies are, on average, far more stable and secure places to hold assets than any cryptocurrency.
If your national isn't as stable as you like, you can more easily use a different national currency. If your country has capital controls that prohibit this, then you are using cryptocurrency to break the law.
My contention is that so far the only use cases cryptocurrency has been successful in are illegal. If the legal restrictions in those areas were removed, cryptocurrency would no longer be useful there.
Did you expect 20% of all US dollars would have been created in 2020? 4x in the last 20 years. That doesn't sound stable to me. When your currency can be debased by 20% in a year, with no democratic process or recourse; 6 board members appointed by Presidents, serving 14 year terms, decide what the price of money is, and how much of it exists. Alternatively Bitcoin's supply schedule is transparent, auditable, open source, mathematically provable.
If your national isn't as stable as you like, you can more easily use a different national currency. If your country has capital controls that prohibit this, then you are using cryptocurrency to break the law.
And what happens when the ultimate reserve currency (USD) is broken? People flee to gold. Well, Bitcoin is digital gold; its more secure, cheaper to carry, has better supply stability. Your solution to escaping a sinking ship is essentially jumping into a more slowly sinking ship.
My contention is that so far the only use cases cryptocurrency has been successful in are illegal. If the legal restrictions in those areas were removed, cryptocurrency would no longer be useful there.
The use case for cryptocurrency is escaping government monopoly of money, returning a savings rate to individuals and institutions.