When I was growing up you would adjust your consumption to your budget—and wouldn’t go where you couldn’t afford to pay the expected.
Millennials are sponsored by their parents at such a level for so long, they never develop that concept.
I worked in the restaurant/bar industry for a while.
Some of you may not believe it, but it is an EXTREMELY hard, stressful job in many cases. Knowing what I know, I am a very good tipper and and exceptional tipper when I get really, really good service.