That’s the part I didn’t understand either. You’re not. You can’t. Because that’s how the city was built. But if the city was built differently a married couple of professionals could get to work without a car.
There’s more to it than this. Check out the Not Just Bikes YouTube channel for the whole story
Car dependency is a symptom. People aren't car dependent because they're addicted to cars, they're car dependent because where they live is super spread out.
Cars are a problem but forcefully excising them is both a political nonstarter and just makes life harder for everyone. People will choose to not own cars once it's feasible to do so.