> Imho, they are inferior to real currencies at everything except for that. Add to that list the transaction speeds for just about any PoS cryptocurrency. A n

> Imho, they are inferior to real currencies at everything except for that. Add to that list the transaction speeds for just about any PoS cryptocurrency. A new transaction is visible to others on the network within seconds, and is fully validated within a few minutes (as I just observed moving some Cardano around last night). That first metric is on-par with your average credit/debit transaction while the second blows it out of the water (credit/debit transactions can take multiple days to actually move out of a "pending" state). The only thing other than a PoS cryptocurrency that's even theoretically faster on both points would be a payment app like PayPal or Venmo, and that's only if you're maintaining a balance in those apps (otherwise they fall back on credit/debit or bank withdrawls anyway). There are other possible superiorities or inferiorities which are indeed a matter of opinion (for example, IMO the inability to reverse a cryptocurrency transaction makes it superior to a credit/debit charge or wire transfer or payment app, and the "downsides" are better solvable with escrow anyway; as another example, IMO the ability to send arbitrarily-large-or-small amounts of cryptocurrency makes it superior to said alternatives), but transaction speeds are factual and readily observable.