In Our Pursuit of Tech-Everything Are We Forgetting Someone?

More and more retailers are turning towards a cashless model by accepting cards and other electronic payments...and nothing else.  This is done to speed convenience - surely tapping your phone on a reader to get your morning bagel sandwich is faster than digging a $5 bill out of your wallet, getting change, and oh, make sure to leave a buck in the tip jar.  Some retailers also claim that cashless business is safer and more economical because there's nothing to steal, no armored truck deliveries, no taking an employee off the line to check cash in under dual custody, and no bank runs for cha