commented on To Tip Your Server or Not to Tip Your Server: That Is Not the Question
I would like to speak up for delivery drivers (of which I was one for over 4 years). They're like servers who go the extra mile (ha!) to PUT THEIR LIFE ON THE LINE to bring you a burrito.
Most places only give the driver a portion of the "delivery fee" or a percentage of total sales to cover gas costs. You might break even on gas but NEVER on brake pads, oil changes, parking lot dings and the like. Additionally, no amount of money is worth 6 hours of facing down drunk drivers in the rain.
Please always tip your delivery driver.
Also, consider that tips are either pooled and shared or the back of the house is tipped out. Your tip doesn't go wholly to the server, it goes to the whole restaurant. Dishwashers, prep cooks, bussers, they all depend on tips to make up for the shortfalls in minimum wage and often shitty, unpredictable hours.
Think of the tip as a portion of your dining experience that is only between you and the staff, not you and the boss. The boss takes home the lions share of the price of the food, the staff get to split your tip. There's NO WAY a boss would translate increased food prices to higher staff earnings. That's not what bosses do.
Tipping is what makes a food service job "good." Not tipping is the mark of a true jerk.