When I stopped working ( 5 years ago, early retirement at 60 ), we did talk about selling my car and just using MrLP's. I also do very low mileage, mainly a supermarket run once a week, and maybe a couple of other small trips if we really need something.
MrLP is still working, so this would mean that I was at home without transport. The main worry was if my lovely Mum needed me quickly, how would I get there? In the car, it took 10-15 mins to get to her, on the bus it took at least an hour, probably more.
So we kept my car, and it was invaluable towards the end of her life, when I was visiting every day, sometimes twice a day.
However, when MrLP retires in a few years, we will definitely consider just going down to one car.
Take care x