I hate tipping. It makes me uncomfortable, so I always tip really well, and I feel like I'm paying a niceness tax when I do it.

I will probably consider uber less of an option for short trips around town if tipping is baked in as an optional part of it. The negative feeling at the end of the ride will negate some of the uber convenience, and I'll walk or ride the bus.

That said, I already tipped uber drivers in cash if I was installing a car seat in their car and they were polite about it.