I would give zero tips if I could. The problem is the spitting in the food and other bullshit like that. I know of people and restaurants who have literally spit in the food because of no tip.
That alone makes me not want to tip because the threat of that makes the tip undeserved, but the threat of that forces me to tip regardless.
> I know of people and restaurants who have literally spit in the food because of no tip.
Since you typically pay (and tip) at the end of the meal, how do these people know?
If I honestly thought there was a risk at a restaurant that someone would do this for any reason whatsoever, I'd absolutely never go to that restaurant.
That alone makes me not want to tip because the threat of that makes the tip undeserved, but the threat of that forces me to tip regardless.