Why do I need a car - because there is no public transport near here. It’s easy to take a London view when you are saturated with options.
Why do I need a big car - because I’m a cyclist. I need to take bike + kit to races, abroad, to Audaxes etc. Without a car there would, for me, be little point in owning bikes. Others will no doubt vary in their view, but maybe they have a cunning plan for getting bike+ kit+2 or more sets of wheels for 10am on a Sunday to deepest Lincolnshire.( not at the moment obviously).
Not all cyclists have the same interests or reasons to ride.
To be fair though, these are choices you have made. In part they are choices we all made. Businesses didn't move out to business parks and retail estates and wait around for a few years while everyone got around to buying a car. Mass car ownership made this possible. We, of course, paid for it all and continue to pay for it. The time and money in those journeys, the costs of those cars, the infrastructure, the tax breaks for businesses, the evergreen subsidies and bailouts to carmakers, the healthcare costs of all that collateral damage, and endless other costs that this unsustainable style of living accrues. We pay them all, one way or another.
Banning cars overnight is obviously a terrible idea, but we have to think how we build sustainable communiites and, yes, that means as individuals we have to make some of the decisions. If people want a healthy high street, they have to use it. They have to think about the places they live, the things that they do, and think whether or not they want to rely on a car. Walking down some average suburban streets yesterday, nearly every single front garden is given over to car parking, two cars crammed in an another capping the ensemble on the pavement outside. I don't think many people even notice they now live in a grim car park. Every aspect of our life is now carved by the motor car.
This didn't happen overnight and it doesn't have to be, of course.