Can anyone share their experiences with Uber?

One and only experience with Uber when visiting a friend in San Jose, she parked her car and we walked for miles around San Francisco, her hubby working for Apple is a big Uber fan, she ordered an Uber car and WOW. Spotlessly clean, I mentioned I'd love to go down that real windy switch back road like I'd seen on the Streets of San Francisco with Carl Malden - bottom line he took us down there ?Lombard Street, was most professional looking and in mannerisms we had complimentary bottles of water and mints or gum. WOW, how refreshing than the rude and obnoxious, stinky dirty cabs we've been in on occasions.

I can relate to some of the concerns mentioned but have to say I would use them again based on experience in San Fran.