But your life is the perfect example to make my point!
We SHOULD use cars. But we should treat them as garnish, not the main course. Use them for exactly the things they're great for: moving houses, needing to visit the hospital, long road trips to a destination where you'll need flexibility to drive around once you reach etc.
I'm not advocating a ban on cars. I'm not even advocating not owning them. The simple step of banning them on the main shopping street is a far cry from any of those things, but makes the actual experience of being on that street a lot better for the shoppers.