To somewhat bring the conversation back slightly to covid, my last word (for now at least) on the cash debate would be the report that has just been released on the way the government handled the truckers' protest last year over Canada's covid measures, and the comments from the Canadian goverment on the report (which of course says that everything the government did was just fine), in particular these comments on freezing protestors' bank accounts:
https://www.c-span.org/video/?52614...holds-news-conference-trucker-protests-report
(bold mine)
In a society without a cash alternative, it will be much easier for a government to do things like this whenever you're not 'behaving' in the way they want, and also it will be much more effective more quickly. And if it is easy for them to do and makes life easier for them and harder for anyone opposed to them, you can bet they will do it.
If somehow you're 100% confident you may never want to protest against any government measure for the rest of your life, that may be an argument to carry on embracing the idea of a cashless economy (or as perhaps it could more accurately be called, a 'government permission required' economy). But if you'd like to keep that option even slightly open (and still be allowed to buy food and medicine and similar things), now may be a good time to assert that you'd like to keep a cash option for transactions. If nothing else, don't the actions of governments around the world over the last three years give you at least some pause for thought, before enthusiastically passing over more control to them to micro-manage every little detail of your life for evermore?