As neighbours, we have agreed that if we didn't have cars, we wouldn't be able to live here. It's rural, and we all work within walking distance... but then it would be a pain for days out, hobbies, vet/GP/dental visits, visiting family further afield (i.e. different parts of the UK), livestock sales, etc. As we're miles out from town, if any of the neighbours are going, there's usually a group WhatsApp message of, "Does anyone want anything picking up while I'm in Tesco?" I already do a huge online grocery shop once a month, but the little top-up shops for fresh items/that thing that is always out of stock online would stop. The choice of takeaway is already very limited as we are too far out for most of them to deliver. I also wouldn't be able to go and help out with lambing on a friend's farm far away, wouldn't have been able to attend a job interview today, and so on.
We are lucky that there are buses sometimes, but the train station is in the nearest city, the local taxi rank (which serves a wide area) consists of one car, and our nearest airport is over the border in England. I could do the very unlikely thing of taking up cycling, but that doesn't seem very appealing after a 14-hour day in work, especially in winter.
It's bad enough when my car has to go for its MOT/to the garage, as it is easier to spend all day in town than getting the bus home and back again. I like the independence of having a car, and it's quicker, easier and probably would work out cheaper (in the long-run) than public transport for me. I suppose that a tractor and trailer would be more efficient at times (like when buying large furniture), but the permanent 25mph speed limit would drive me up the wall 😂