Just this morning I had a woman swearing at me and giving me the finger, with her two small children in the vehicle, because I abided by the 4-way stop outside an elementary school and she tried to run it.
Between the cell phone users, and the middle aged women in their SUV's that can't do a shoulder check or read a single lane sign, and the guy with the chronic one-upsman syndrome who guns it to 30 over the limit just to pass you on the highway and go slightly under the limit.
IMO only about 20% of people on the road actually follow the rules because they know they're right and help keep them and their passengers safe. Then there's probably another 60% who generally follow the rules simply because they don't want to get a ticket. The last 20% just don't give a shit, do what they want, when they want and god forbid they don't get it.
I'd also say there's an additional 10-30% who are purely seasonal drivers known the other 7-9 months as "cyclists". They only come out in the winter, and are likely responsible for as many if not more accidents than inclement weather. Living in southern ontario I actually dread the roads on that first heavy snow because, no joking around, I'm actually worried I'm going to kill someone and it won't be my fault.
I don't think driving is doing society any good except at providing a way for the stupid, and the stupidly unfortunate, ways out of the genetic pool.