Guest: Tipping demands have gotten out of control

With every purchase you make — at coffee shops, fast food restaurants, chain stores and more – you are presented with a digital payment screen that asks you to leave a tip.

On one hand you feel guilted into leaving a tip, because the person who just rang up your purchase is staring directly at you.

On the other hand, you wonder how in the world did we get to a place in which workers in so many dif...