I have never driven & I don't use the bus, I just get taxis if I need to go anywhere beyond walking distance.
At one point I did try to cost up having a car & including MOT, insurance, breakdown, money for tires etc.. plus petrol & parking it worked out that it would have cost me more to have a car than to make the same amount of journeys as we do actually make by taxi.
That was assuming the purchase price of the car would be spread over 10 years so only 1/10 of the car purchase price counted against the years total costs to have it.
It just feels like you are paying more when you have to pay for each taxi, because people tend to think the cost of the journey is just the petrol cost.
On the rare occasions we go longer distance and have a cab bill of a couple of hundred each way it really stings, but still works out less over a year & my cab company give me discounts because I am a long time regular customer.
I've stopped keeping a record of it now because I've been doing it for years & I would no longer even be allowed to drive as my eyesight is not good enough.
It wouldn't be much cheaper for us to use buses over taxis & they are dreadful here.
That said, during Covid a lot of cab drivers quit when there was no work & they stayed in whatever new job they took, so it's harder to get a cab where I am now & you often have to wait longer.
I online shop, so food deliveries aren't a problem.
Sometimes I do get a cab to do a food shop, but very rarely as I find I don't impulse buy online food, but we come home with stuff we never eat if we go to the store.
A trip to the nearest shopping centre for us is £20-£25 on cabs, but it still works out less than a having a car on the road.
We only have to go for a stroll though & we get to the sea, or to a nature reserve, so we have entertainment that suits us on the doorstep.
When we lived very rurally, we did the same thing, but it's worth finding out if there are local cab companies & what their opening hours are.
My local cab company when we were living out in the middle of nowhere was actually based over ten miles away & they didn't work late (or too early, or Sundays or Bank Holidays) so you couldn't always get a cab no matter how much you were prepared to pay.
I think if you have to drive to work it probably is cheaper to run your own vehicle, so it's going to depend on your lifestyle & how often you use your car.
It is worth sitting down & working out ALL the costs of having a car before you look at how much it would cost to use cabs or buses/trains.
It's often more than people think.