Bitcoin is both a currency and a payment method. Everybody knew right from the beginning that it's not a great payment method. The 10 minutes delay is a long time if you want to prevent double-spending.
For fast payments nothing beats a server with credit accounts. Naysayers will say that it defeats the purpose of bitcoin, but nobody thought bitcoin would entirely make banks and their fractional reserves system disappear. If anything, people will still want to borrow money.
Banks could function on top of cryptocurrencies, the difference would be that their clients would be able to withdraw their funds out of the banking system alltogether at any time, that is not just turning one credit into an other.
For fast payments nothing beats a server with credit accounts. Naysayers will say that it defeats the purpose of bitcoin, but nobody thought bitcoin would entirely make banks and their fractional reserves system disappear. If anything, people will still want to borrow money.
Banks could function on top of cryptocurrencies, the difference would be that their clients would be able to withdraw their funds out of the banking system alltogether at any time, that is not just turning one credit into an other.