This, more than anything else, might be the reason that I stop using Uber. I've loved the idea that I can pay a fixed fee, and that I don't have to think about money at all—having to tip, or think about tips, is so much of what I hated about taxis. Uber was great because it was a fixed amount.
If you want the driver to get more money, raise the price. Don't raise the price by making me feel guilty.
If you want the driver to get more money, raise the price. Don't raise the price by making me feel guilty.