From what I can see on this thread, there are an awful lot of people who don't need a car, coz they live in LONDON. 
Not everyone lives there ya know. (Nor would I want to live there!)
Unless you live smack bang in the middle of a city or large town, you will find life fairly difficult without a car. Whether you like it or not, it's true. Especially if you have a family/children, and a job that doesn't involve just sitting there at a checkout, or inputting data into a computer, and doesn't have regular 9 to 5 hours1
As I said earlier in the thread, when you have responsibilities/a family/a career where you travel about quite a bit (like mine,) having no car is not an option.
If I were to be interviewing someone for a job, and they were pretty much equal in every way, with the same qualifications, similar work experience, similar personality etc, but one could drive and the other couldn't; the one who could drive would be the one I would pick. Basically because being able to drive shows a strength of character and determination, because it's not easy to do.