And that is exactly why cash will be outlawed in the next 3-5 years. It will either be done over the tax issue (which will be the true reason) or for beneficent reasons such as “starving the terrorists of contributions” or “ending the flow of illegal money to the drug trade”
At that point the government will have complete control. THe only black market possibility will be to have a large enough barter community that you can get everything you need from like minded individuals, and that you have a skill that can be bartered. Gee, I wonder why they are cracking down on home farms (gardens)?????