The answer is so simple. We really really really really like our cars/trucks/SUVs in the US and have agreed that about 30,000 to 40,000 people a year will die so that we can keep driving the way we do. It’s the price we pay for the way we choose to live.
It's funny because when I see people who really, really like something their faces are filled with joy. They talk about what they love and it's always positive. When I see car people I see anger, frustration, furrowed brows everywhere, oh and did you hear about that asshole on the road yesterday? From the outside this "love" looks more like an abusive relationship or Stockholm syndrome or something.
I knew from a very young age that driving a car seemed like a dumb way to live and so wondered why everyone did it and why nobody decided to try something different?
My view is that if people really hated driving they would change their lives to do it less! Instead they make excuses about how they have to drive. I judge people's actions and the way most people choose to live tells me that they love driving!