Agreed. You make choices to do what you want with your electrons. No one forces you to buy parts online. Presumably you do it because it's convenient to do so, even though you earlier talked about the benefits of cash as though that is all you really need.
You see how it works? We like to talk big and brave, but when it comes to convenience, we'll use a microchip to buy and sell. Sure. No problem. That's how online purchases work, through microchips computing the information.
At what point do you draw the line? At what point do you make a stand for your convictions despite the inconvenience it may cause? When it comes to the point of actually sitting in the doctors office with the syringe tip pressing against your skin, because it's either get the chip or lose your job? Is that when you draw the line?