I choose not to have a car. I live in West London and there are generally good Transport options; regular bus, train and Underground services. If I need to go out into the countryside I can rent a car for a few days.
Even before the current overpricing of fuel, I’ve been glad I’m able to do without the cost of running one. I can spend that few hundred pounds month on other things.
The thing is though, to get people out of cars more, the alternatives have to be attractive enough.
I’ll admit that depending where I am going, a car could be quicker, but at times it could take longer, when you factor finding a parking space into the total journey time.
Also, for the average car user to use the car less, they have to break the habit of literally driving everywhere. I know people where I live that will drive to the local small shops which are no more then five minutes walk away.
For some the car is a way of life, when it doesn’t always need to be.