Im not sure many people view cars as being a god given right, but when you consider outside of major cities in thie country public transport is essentialy non existent and only useful to people who have no job and can travel any time of the day and not worry about how long it takes to get anywhere.
The key point that people miss when they claim a car is not a luxury, it’s a requirement, is that people on the whole (Exceptions to every rule) choose where they live. I also live in an area where the nearest bus stop is quite a walk and therefore having a car makes things much much easier. But I choose to live there, too.
With the exception of places like central London, and the nice parts of central areas of larger cities, generally speaking inner city living is cheaper than suburban or rural living. This is because it's much more undesirable - the houses are smaller, closer together, there is a lack of green space, its generally not as nice a place to live as the nicer places out of town. However one thing inner cities do have is passable public transport.
But because lets face it, most of us don't want to live in an inner city urban environment, we make the choice to live further out. What we cannot then do is forget the fact we made this choice and start saying we do 100+ mile a day commutes by car because we 'have no choice'. We do have a choice - we exercised it in the first place by choosing where to live. It is correct that some people don’t choose where to live - they have housing allocated by the council or housing association perhaps - but these people are extremely unlikely to be allocated housing in nice leafy suburbs or nice villages with no bus service so that doesn’t really count.
Just because the other alternatives are sucky or not as nice as our current situation doesn’t mean we have 'no choice' nor does it mean a car isn't a luxury. A car is a luxury - and if its required for your current lifestyle, its likely that your current lifestyle is a tad more luxurious than those in the less nice areas of big cities with ample access to public transport, as well.
I'm sure I will now get flamed as this is never a popular opinion.