These are all also problems with bitcoin.<p>[1] Bitcoin is very difficult to keep safe, so most people will store it on sites like Coinbase &#x2F; MtGox. These sites will inevitably lend other people money, which will lead to the same issues, in exchange for interest.<p>[2&#x2F;3] Censorship of payee &#x2F; Censorship of product. The perceived anonymity in bitcoin is largely fictional - you can extract the details of who paid who for what, and you can prevent someone exchanging bitcoin for fiat currency &#x2F; goods. At the moment authorities simply don&#x27;t care because the value of the transactions is insignificant in relation to hard currency.<p>None of these &#x27;problems&#x27; (and society in general doesn&#x27;t care about these issues) are to do with the currency. The first one is endemic to the concept of a bank which can lend more money than it has, no matter what currency it deals in. The second two are social &#x2F; regulatory problems which won&#x27;t be fixed by some new crypto-anarchist dream.