I don't know really.

On the one hand I can see the advantages of anonymous financial transactions.
On the other hand I have no doubt that this would be the perfect ground for money laundering, ransomware, blackmail, trafficking, etc...

We may not like banks but at least they are subject to some regulations.
Ultimately the financial crash wasn't caused by the banks but by a lack of regulations or lack of enforcement.

I'm all for cryptocurrencies but not so sure about bringing in anonymity.