&quot;Easier is to use&quot; is dependent on how you are going to use the currency.<p>Using cash locally when buying&#x2F;selling stuff in person is in most cases superior to all other ways of using money.<p>OTOH, sending cash abroad is risky and problematic. SEPA and similar agreements exists but you still have to wait at least a day until the money arrives.<p>For a worldwide available paying network, bitcoin is not that unattractive. It&#x27;s not the best option for all possible use cases, but what other paying option is?<p>I think the centralization problem is not as problematic as it may seem. It all depends on how much the miners are going to use their centralization power. But you have the same problem with central banks. Maybe even more because the bitcoin miners have something to lose if they act unreasonable.