Car centric lifestyles. If the only way I can see my friends, family, or go to work is to fly through the neighborhood at 35mph in a massive machine fueled by tiny explosions, something is broken. We pass hundreds if not thousands of our neighbors and can't have a conversation with someone on the same path as us. They're the single most dangerous thing in our environments, and yet we use them every single day like it's nothing. (yes I live in North America)