It will be difficult for the world to go completely digital because the governments are trying their best to not allow crypto to take over fiat currency. As you must know that fiat currencies are the most accepted form of currency across the globe, however, the love for crypto is blooming with each passing day and quite possibly this thread has also added a significant traction to it. So, it will not be preposterous to say that the cryptocurrencies making the world completely digital is not highly unbecoming as there's no stopping them anytime sooner.