I've used Uber once when i was with a friend who's got an account.
I very, very rarely take taxis -- i take the bus or walk. Surprised at the number of people on here who use Ubers/taxis.
Yeah I've only ever taken one uber in my life, I prefer to walk or get the train / tube. The one uber I took did save me a bit though and I was hammered and staggering the streets of some suburban hole in the early hours. It would have been a very very long walk had it not been for uber.