One study from last year suggests that cash is the preferred payment method of just 11 percent of U.S. consumers, with 75 percent preferring cards. In other markets such as China, cash is dying out even more quickly, with mobile payments increasingly eating into both its share and that of cards.
https://www.recode.net/2017/7/24/16021630/cash-payments-cashless-mobile-inequity-square-apple-pay-venmo-amazon
origin - http://www.pipiscrew.com/?p=9337 were-moving-toward-a-cashless-society-and-lots-of-people-are-going-to-be-left-behind