I think people underestimate the importance of physical cash. It’s annoying, sure, but it affords a type of freedom that won’t be replaced once lost. I wish more people understood this. Sadly, most people seem willing to trade a tiny bit of convenience today for a worse future tomorrow—for example, the tipless, cash-only coffee shop on the HN front page. I guess, like smokers, people don’t believe there’ll be consequences until it’s too late.