Yes, this is absolutely key for me. Effectively never needing to worry about being able to get a ride to and from wherever I need at any time removes a huge amo

Yes, this is absolutely key for me. Effectively never needing to worry about being able to get a ride to and from wherever I need at any time removes a huge amount of stress and overhead from my life. The minute that stops being reliable, I have to start planning my travel and movements around transportation methods that ARE reliable (e.g. rental cars, or driving my own car). Once I've rented a car or driven my own car, the chances that I will use an Uber or Lyft for any part of that trip drop to near zero.