In addition, it should be remembered that cash is the least traceable by government agencies and in this they are similar to cryptocurrency. In addition, states and their banking systems set too many different restrictions on the number of maximum amounts and the frequency of transactions, which leads to periodic blocking of transactions with subsequent explanation of sources of income, the need to prove the absence of intent to commit fraudulent actions and many other similar situations that significantly complicate the use of non-cash money.
Of course, it will not just disappear because there are still many of us who have special needs as conveyed by @Abiky especially for remote areas, let alone having a bank account like other people, there is no unit office and if you send money you have to go to the city.
In my view, seeing the current conditions, indirectly, the use of digital money, if seen from its current performance, is increasing, especially if it is wrapped in blockchain technology and e-wallets, it will further help speed up transactions and also eliminate physical money.