I drive a LOT of miles as part of my job, current average is around 1300 miles a week . Yes there are a bunch of horrible drivers out there. My suggestion is to take a Defensive Driving Course every few years just as a refresher. My company requires it every other year as part of our annual training if you drive a company vehicle. It won't make the idiots drive any better but it will help you cope with them. At one point when I wasn't driving at all it was almost like I had to relearn things, like not driving on the sidewalk to park...

Aaron