I'm consistently tipping 15% of the total (pre-tax) because I disagree with the gratuity system
There is nothing wrong with 15% tip. Do you work in the restaurant industry?
No, I am an ordinary customer.
You should give an acceptable tip for good service and 15% is more than enough. Company need to start paying restaurant workers a livable wage.
I don't agree to pay a tip for food delivery.
Same here. Why tip when you are just delivering food. They didn't make the food and they get paid for delivery.