Cryptocurrencies are still just an intermediate step in wealth... Until more and more shops start accepting more than just one cryptocurrency. Bitcoin might be a good choice for buying a Lamborghini, but for smaller payments we still need altcoins.
Large network fees like with Bitcoin are no ways better than large transaction fees taken by regular banks... We need cryptocurrencies where network fees are as small as possible without making mining unprofitable...
Some people argue Proof-of-Stake coins are better, but for new users they are the worst choice as the whole system is based on already having a lot of coins. It's like 10% of the people owning 90% of the total wealth or 1% of the people owning 99% of the total wealth.
Of course we are not at the final stage yet, I don't see that as a criticism as all technology takes time to develop ... as for being an intermediate step in wealth, not quite sure what that means. Cryptocurrencies are capable of many more things than simply storing wealth, it seems your confusing wealth with a unit of exchange. Agreed its not a functioning unit of exchange that rivals fiat just yet but its not as far behind as you seem to think, I have a Tenx card and can spend crypto easily and as fast as I can spend fiat with no fees.
Value of wealth is based on how much you can get other valuables by spending it... Value of (crypto-)currency is zero if you can't use it locally, no matter how many coins you have. I know some countries allow using cryptocurrency backed up credit or debit cards, but those usually assume there is a single wallet containing the required amount of coins. With currencies like Bitcoin, one must initially have high amount of coins before the card becomes usable. With wealth I meant total sum of all cryptocurrencies converted to single currency.
Thats just a load of nonsensical gibberish. Maybe your used to impressing your friends who don't know about cryptocurrency and they don't realise you haven't a clue what your talking about , but on Steemit many people have been in the crypto space for quite some time. Your talking about purchasing power the term 'value of wealth' your using makes no sense. If you think crypto has no purchasing power your living on another planet and I pointed out in my first reply that cryptos can be spent theres been a BTC ATM in my city for 5 years. I don't really know what your getting at other than showing a real lack of any understanding.