(My first essay titled HANDS OUT ended abruptly for some odd reason; evidently the conclusion went into the black hole of cyberspace! It bothers me that the ending paragraph doesn’t make much sense so I’m resending what I originally wrote, if you care to read it. Thanks.)
I don’t mind tipping for good service to a counterperson even if s/he is paid minimum wage, if I make requests that isn’t ordinarily part of the employment, but when tip jars are there just because a “bonus” is expected to perform the job of sandwich making, ice cream scooping or for fixing a latte that they’re hired to do, it’s off-putting.