@jordan with the current state of affairs getting rid of physical currency will be dangerous. Only with wide adoption of privacy coins such as $ARRR or $XMR we can ensure that we continue to have a cash-equivalent in terms of privacy.
We need to be alert when the time comes where governments start declaring cash as extinct. A cashless society right now will mean total control of our personal finances in real-time.
This is why we urge people to only use privacy coins.