>people with disabilities, older people with problems with walking, pregnant women

Are precisely the kinds of people less likely to be able to drive. Accessible and convenient public transit is a better option for them, provided of course that it's accessible and convenient throughout their journey - that means sidewalks, intersections, transit stops, building access, etc.

If families with 4 kids don't need a vehicle at all, it's a huge financial benefit for them. Here in Canada a mini-boat on wheels large enough to accommodate such a family is friggin' expensive. Cities tend to have free or very cheap tickets for kids, so if you can get away with doing commutes by transit and have a Corolla for weekend errands and groceries that you don't have to shove all 4 into, you win $1000s every year.