Well it's true we spend a fortune on petrol, but our council tax is apparently the lowest in the land. (And I quite like staring at sheep and inhaling the smell of pig poo!)
I would certainly use the buses, as I've had a bus pass for years and years, but rarely get to use it. There's talk of getting a bus 'service' (we use the term loosely) from our village to a not-very-nice little town (not Norwich sadly) which would give us exactly 2hrs before we had to catch the return bus. But even this hasn't materialised yet.
I used to bike around, but I'm much too old now.
We have no Post Office/bank or even an ATM. Our village shop is tiny and only sells a few things. I really do feel we're justified in having our cars. It would be impossible to continue living here if we didn't.
On balance though, I adore village life and the quiet countryside. I couldn't exist in a town, I'd suffocate!