I understand the op.
I think once you have a car and get used to that lifestyle then imagining life without it is very difficult.
My days with the DCs would be totally different without the car. We'd stay in the house a lot more and be bored rigid by just going to the local park.
Because I have the car I go far and wide with them at no notice.
We arrange activities that just aren't accessible otherwise. Eg we used groupon to take DS horse riding. It was rural 20 miles away. 25 mins in car. Absolutely no public transport. Taxi would have been what £50?
The DCs like soft plays so we go to lots of different ones up to 10 miles away so it's not to samey.
Dd goes to ice skating lessons. It's 20 mins in the car. It takes 1 1/2 hours each way by bus.
We visit our parents frequently. With both the car saves at least an hour each way. The DCs wouldn't see their gps as much (and we wouldn't have such easy babysitting!) if we didn't have the car.
Sometimes we'll go out shopping for a specific item but it won't be in the first shop so we can easily drive to another one. We can do in a couple of hours what it would take a whole day to do. This means we have so much more quality family time.
Then there's transporting stuff. Our last house move we did almost all ourselves vis multiple car journeys. That saved hundreds in van hire.
The DCs are both at schools a few miles away. 15 mins in car. An hour by bus. For school events/partners evenings not having the car would be such a hassle and take up loads of time.
Sometimes DS forgets or loses his bus money home so the school calls for me to pick him up. How would that work if I didn't have car?
As for the people who say they use taxis, I had a very bad experience with one and don't feel safe in them. Certainly wouldn't put me dc in one.
On the other hand though, dp doesn't drive and somehow manages he just comes home late and soaked a lot.