You paying for cabs to get groceries is not "not needing a car" that's still needing a car to do anything. I've been to enough countries in Europe personally for extended periods that I know it's feasible to have a completely 100% walkable life. WALKABLE. Not "I still need to pay for a cab to get groceries."
It's completely realistic for most of your basic needs to be met within walking distance in the world today. Sure, you may want a car to get to some specialty shop across town or to go to some other place more quickly. But that a choice you can decide to make over public transportation.
My only complaint is that I'm absolutely, 100% FORCED to have a car in order to survive. This is absurd and a uniquely American problem.