Many people are released from same day surgery while they are still effected by local anesthesia. Having a person stay with you for a few hours after you get home might keep you from walking on a recently operated on foot, for example. An Uber driver will just drop you off.
I don’t have any trusted person within 3 times zones of me. So I just can’t get any necessary medical treatments anymore since I don’t have someone to babysit me in the taxi cab on the way home? Great. That is nice.