As an American, now living in Europe I cannot understand the pushback against cashless systems. In Germany almost every cafe, restaurant, or bar requires you pay with cash. I understand there is a slight charge to the vendor when charging to a credit or bank card, but the amount of time and energy saved by having "exact change" every transaction should increase productivity enough to cover any costs.
Personally it's because I think a cashless state is "evil" in that now all spending is gatekept by someone - usually a government or large business. Plus tracking every dollar you spend is also problematic for me as well. So I spend cash whenever possible simply to "vote" that I am willing to deal with a little more hassle in the name of freedom. I also don't like that some private party has effectively inserted them…
We live in a digital age and it’s only going to evolve faster. Money is nothing more than numbers in a system.