For many, I suspect the car represents a great deal of freedom in exactly the same way that not owning a car means to this self-selecting group: making a decent living, access and comfort, etc.
The real aim to force the decline of car use is sustainability, efficiency and equality. It's not going to happen without huge investments and will affect the whole economy negatively for decades, which is why Governments shy away from doing anything very serious about it.
In the meantime, I'm also happy to not own a car, cycle to work, etc. But if I lived outside central London I would get one immediately.