So for those who don't give a damn about what kind of car they drive, then I guess it doesn't what kind of house you live in either. It has a roof and walls, some bedrooms, a bathroom or three. Style and location doesn't matter, afterall. Its just a house....just a place you go and sleep, take a shit, or eat at.
For many, a vehicle is the 2nd largest purchase you will make(behind a home). Some of us do things with their vehicles beside going from Point A to Point B......we go to the track, go offroading, or hell.......street race. We attend, or even compete in, car shows. We may like to work on our own vehicles, and show our sons or daughters how to do so as well.
Who really cares if someone lives in a cheap apartment but drives an AMG or M5? It doesn't matter to me(or anyone else) whether they are trying to compensate for something they don't have or they simply have a different value system. To me, people that drive Camrys or Volkswagons are people of severely limited imagination and personality.