The problem of bitcoin is that there is a finite amount of it that will be available. As use of bitcoin is scheduled to grow, the pace of the production of bitcoins needed to support the market does not keep up. This results in a steady increase of the value of bitcoin, which is good for adoption (more people will buy it to speculate and sellers will accept it), but endangers it as a mean of paiement as buyers are al…
Everybody has a cellphone. You pay and receive "money" with your cellphone. Wallets will be redundant in the future, everything that is in your wallet will be stored in your phone.
And you know which currency can be paid with your phone? Exactly!