"Why did silver coinage end in the US?".................. Marketing!

When you can convince a person that the fruits of their labor is worth some scraps of paper and non-PM metallic discs, why mint the real deal? Its hard to mine and mint silver coins! Let them trade their Life for paper scrip! Hey, its easy and profitable! Efficient too!
That was Step One! Then, you eventually convince a populace that the fruits of their labor can be tallied with electrons, even better! We can mint these all day long without the need for machinery! Step Two, Plastic cards!
Then ya see, for your own good and security, lets go biometric! A simple swipe of your implanted hand or forehead chip wallet to make a purchase! Who needs pockets! Heck, my stupid little dog has an implanted chip even! In case he gets lost or stolen or something... As far as I know, I dont have one yet, and I get lost all the time!..
Its very easy to create or take 'money' from people as long as its electronic! A guy dont dare try to take phyzz from a guy face to face...Its problematic and burdensome, especially from relatively spry old guys who might fight back...Simples to do from a keyboard though..You can take everything a guy has mostly, or at least pin him down real good for compliance...
I challenge you all to go observe the checkout at your local Sams Club this weekend...only 1 out of ten is pulling paper...9 are popping card, and theres a few using the phone scan....
Give it a year, and there wont be any cash transactions, maybe a few old dinosaurs popping plastic, and the rest scanning phone or using the biometric hand scan Sams Club feature...
Wallets, pockets, and purses will go by the way of buggy whips and thimbles..Nobody will have a penny to their name except electronically...Try finding a fresh dropped lost electronic farthing with your fancy 'metal detector'! Nobody is carrying a knife or a cig lighter anymore let alone a thimble!! I dare you to find somebody carrying a thimble let alone knowing what it is!!

Ask around this weekend..Nobody under 50 even knows what a thimble is!
Just recently, in the past month or so, here in Michigan, you CANNOT buy a cig lighter in the State unless you are over 21...! Nobodies got fire or money or a button in their pocket or anything...