Im not saying feel bad im just saying dont be a dick if you have $23.56 as a bill dont pull out change and start giving it to him/her. Give him the 25 and let the person leave. Time=Money Dont waste the persons time making him count the change.
Its just societies norm to tip. I dont pull out a calculator and start counting the exact change i just give it depending on the situation but i just hate carrying change it uncomfortable if its in my wallet and moving around in my pocket is just annoying as ****.
“A turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.” J Clarkson