I agree that smoking should be banned while driving. If you're that desperate for a fag, pull over and enjoy it!
I also hate that if I'm in traffic or driving round town I can usually smell the smoke in my car from the car in front. It's disgusting and not something I want to experience in my nice, clean smelling car.
You're also handling a stick.. that's burning.. while operating a 1 ton+ vehicle!! Madness.
The "I smoke and have never had any problems/an accident due to it" needs "so far" adding to the end.