You were frustrated the customer didn't pay you an arbitrary amount to live off based on their mood instead of frustrated that your boss didn't pay you a legally mandated amount to live off.
The worst part about tipping culture is that somehow bosses have convinced their staff to be upset at customers.
We’ve got to stop thinking about tipping as “the customer giving money to the server as a reward for good service.” and start thinking about it as “the customer subsidizing the business owner so he can save money on wages.” How did making payroll become the customer’s job and moral duty?
The worst part about tipping culture is that somehow bosses have convinced their staff to be upset at customers.