I just don't get the logic. Because the establishment doesn't pay the employee enough, its up to me, the patron, to make up the difference? Fuck that. Yes I know, I will get better drinks, I will get a better bill. But its the principalities that bug me.
But the principality is exactly the point, the tip is there to insure proper service. Tipping wasn't invented as collusion by restaurant owners to fuck their waitstaff, it is there to incentivize the personal nature of dining or your experience at the bar so you want to go back and patronize those establishments. I'm with turbo, I waited tables back in high school, so I tend to over tip waitstaff and bartenders. Baristas and fast food people that make a non-tipping wage, fuck em.