Tips, at least in the US has never been mandatory but it is an immense social pressure. Besides, my understanding is that tipping % is arbitrary anyway - there have been studies that show good looking people get more tips.
I think tipping culture has changed a lot in the last 5 years or so, driven mainly by the point-of-sale machines that request tips for seemingly adding no value. I think people have reached the point of tipping fatigue.
I think tipping culture has changed a lot in the last 5 years or so, driven mainly by the point-of-sale machines that request tips for seemingly adding no value. I think people have reached the point of tipping fatigue.