Less edge cases to deal with, and since most people are not pilots the drone must be 100% automated, turning it into something more like a horse-drawn carriage from days of old. Since air traffic is more tightly controlled they do not have to compete much with piloted aircraft. No pedestrians to worry about, minimal possibilities for accidents. Flying away and parking somewhere away from your location is not just a feature – it's mandatory since our world has no accommodations for consumer aircraft parking. Since most landings can be done on the rooftops of tall buildings, it's conceivable that we may reduce the amount of time we spend walking on dangerous or dirty streets, and also opens the door for more creative skyward architecture and retail. And of course there's the magnificent views you'll get of a city even in a boring daily commute.
I will probably not own a self driving car given current technology, but I can't wait to see the age of true flying transports for the masses.