I'd like to have a farm in the middle of downtown too. It isn't possible. You get more choices in the same amount of time with a car, and get more space as well. Without a car you better like the doctor withing waking distance (my family considered them quacks and has heard plenty of stories about people almost dieing because obvious things were not caught in regular visits, instead the ER had to figure them out when it was almost too late). Ymmv, I like choices.

Of course cars do take up a lot of space, but even factoring that in you have more choices in a reasonable time with a car than without.

Don't read this as me approving of cars. I understand the appeal and drive, but I hate it.