Would be an awfully long ride if the drivers did nothing....

As I pointed out in another thread, Uber drivers are making below minimum wage most of the time. The only other workers I know who get that treatment are waitstaff, and tipping them is basically mandatory at this point.
Another fallacy is that a tip is included in the fare. It's not. At least not for UberX where, as mentioned above, drivers are making really shitty wages. Uber can perpetuate this on drivers' ignorance of the cost of supplying your own vehicle, the upkeep for said vehicle, fuel costs, and unpaid km/time looking, and travelling to the pickup location, for a passenger.
Uber = great for riders
Uber = bad for drivers
I got interested in this when the whole taxi protest fiasco occurred a little while ago. At first I was totally on Uber's side, but after doing some research I now see it slightly differently. I still believe Uber is fantastic idea, and is the future of short-distance travel. But drivers seriously need some regulations put in place to make sure they can make a livable wage. Otherwise the only difference between Uber and taxis will be the technology and a rating system that keeps drivers in line. Basically, drivers are Uber's bitches, and Uber knows it...and is pleased.
In order to make minimum wage, Uber needs to raise fares about 25%. In some areas, more.