You do realise that some of us non-drivers have actually planned and prepared for such events hence the reason we are comfortable with our choices and don’t need to drive. My DH doesn’t drive me everywhere nor do I depend on him to do so. I can go without being in the car for months. The last time I was in the car was November. I am within walking distance to everything, shops, schools, doctors, dentists, restaurants etc.
If something happens to DH where he can’t drive or dies, I would still be able to manage as I always have before I met him.
Where I used to work, most of the staff took public transport or walked because there were few places to park and either they would have to spend ages looking for a spot or park in the park and ride and take a bus anyway.
We all age including our vision and reflexes and reaction times. There are already too many people on the road with such problems and I rather be one of those who doesn’t rely on a car than someone who does to the extent that they can’t manage without or they have such issues and knowingly still choose to drive, risking their lives and others.