Why are people so obsessed about cars?

Call me ignorant all you want but I just don't understand why people go crazy over cars. My friend who is a car fanatic every time he sees an expensive car he goes wild. I don't understand what is so fascinating, is it the loud annoying engines that create a disturbance, or the price tag, or the looks. Please let me know. Edit: I made a mistake In the way I made my post, making it seem I hate cars or just neglect their popularity. What I was trying to say is that the car community is annoying and car enthusiasts make it their whole personality and act like they are better.