How can you presume we do not pay with cash?! How can you remotely suppose one sane mind would not use cash for all sensitive private transactions - books, medicines, preferential (profiling) products etc.?
We use cash in general because nobody in Dignity would accept their own daily matters to be recorded and given to multiple untrusted parties¹, not to mention potentially retrievable by even more untrusted parties - of course the matter is much more evident for all transactions over confidential items!
(¹EU here: 12 public-hybrid-private DBs as per the PSD2 legislation.)
Are the elements in your set aware of what they are doing?
And why did you post that replying to mine, what is the message? We knew that you in the cashless are many.
Is it a cry for help - as you know what you are doing but cannot care? Ok: reread the "Book of Joe", which obviously you have heard of, and take your side. Both of them, really: one for morals, one at least for the mentions of the beast requiring its mark for transactions.