I absolutely, 100% agree that not being able to drive is a huge disadvantage. I can't drive, and it is too prohibitively expensive to learn. I'd make it first priority, but there is literally nothing more we can sacrifice to make it possible.
I have a two hour round trip on the bus top collect dc from school - it would take 15 mins each way in a car.
So many jobs require a driving licence.
There are birthday parties I can't take my children to on a Sunday because there are no buses and it's too far to walk.
I spend a huge amount of time in the Winter standing at bus stops in the pouring rain, with freezing cold children, which is unfair on them, and hanging around waiting for buses.
It restricts where we can live.
It inconveniences dh as the only driver in the family.
Bus farexs are hideously expensive where we live, restricting how often I can go out with the children, and what activities I can take them to.
I could go on. If I'd learnt to drive when I was much younger (I did try but wasn't very good, and didn't have anyone willing to practice with me between lessons), my life would be completely different. It gets less convenient, and less easy to find the money the older you get, as you have other commitments and expenses.