The person under an abusive situation easily loses the car key to the abuser.
Ambulances get stuck all the time in congestioned cities and that’s a problem.
A car should never be someone’s night shelter, that person is homeless in that case. Houses, not cars, can solve the problem.
Want to do a special trip where car is the most convenient option? You can rent one out. If you only use a car a few times a year, buying one is a terrible waste of money and street space.