I prefer lead, copper and blued steel.
Yup. Packaged into convenient equivalents of similarly sized pocket change.
your misunderstanding is near total
if one chooses as many have, the burden of dealing with cash was lifted a long time ago. there are several non plastic phone aps growing by leaps and bounds that will rise to the top of cashless commerce and on a seamless international basis to boot
cashless commerce is already a way of the world, now