No car is fine if:

- you limit your friends and family to those that live where you can access them.

- you choose sports that don’t require remote locations or large equipment (no mountains, no surfboards, etcetera) or you live where your sport is.

- you move where you can access your job, or you limit your job prospects.

I have lived without a car in a variety of places in the world. Public transport is great if you can accept the set of limitations imposed upon you.