@Elida, @Sumejja I’m just reading the article again Elida referenced and what’s interesting about the topic of a cashless society is that things have started moving very fast. Elida’s Guardian article was published on July 18 2018 – 18 months ago. In the meantime the cryptocurrency space has progressed quite dramatically. China is about to become the first cashless economy in the world and Elon Musk says that paper money is going away. I’m sure you remember that Elon Musk is the guy who created PayPal so I do trust him to have the insight and expertise to predict the future of payment methods: https://www.cnbc.com/2019/02/20/elon-musk-paper-money-is-going-away-cryptocurrency-tech-has-merit.html
By the way, I’m happy to see that The Guardian apparently seems to be one of the newspapers you frequently read 
. It’s one of the few media outlets with a dedication to fighting global heating.