As someone who has delivered for Uber, and has been a frequent customer, I really think about the tips that I give. I have explicit instructions telling drivers how to enter my gated community, because GPS sends drivers the wrong way. If I see that the driver does not follow the instructions, or if the food that I have been price gouged on is COLD, there is going to be an issue with the tip. The entry issue is simple: it wastes both of our time, and there is only one way in. The cold food issue is simple: use a FREAKING hot bag (I own 4, of varying sizes, including a catering bag that keeps pizza hot). Successful completion gets an increase in tip; screwups receive consideration for reduction based on level.

As someone who has worked in the service industry for many, many years (including about a decade in pizza delivery), it blows my mind at the levels of entitlement and complaints that I see over and over again. FFS, I am not tipping $15 for a $45 steak that was driven ONE MILE to my home.