Well I have to admit that I am am guilty and do most of my driving in the left lane. However, I will move over when someone comes up from behind and I don't wait till the other guy has to touch their brakes either. I try to be a very professional driver and am very aware of what/who is around me. My habit of using the left lane comes from riding street bikes when I was younger. The guys I rode with called the right lane the death lane. Thats the lane where you lost a leg when grandma came pulling out of a side street and didn't see you.