Few transactions are complete without a touchscreen asking for a tip these days. Do you leave gratuity when buying your morning joe?

Baristas don’t wait on you for a full meal the way other servers do, but that doesn’t mean they have an easy job. The morning rush is surely brutal, and many of the drinks they prepare are considerably more elaborate than a simple cup of black coffee. That doesn’t mean a lot of people aren’t growing weary of being asked whether they’d like to leave 15%, 20%, or 25% every time they visit their local cafe, however.