There's probably a lot of differnet reasons, like someones state may not let them, crime might not be a real issue, and the individual just might not want to or doesn't feel his right to carry is all that important... than you have the South, our states allow us to, crime is plagueing this region and carrying weapons is a big issue down here and almost everyone does.... here in louisiana your car is an extention of your home, so no permit needed to carry loaded in your vehicle.