Leo,
Notice I said "in the privacy of my own vechicle". What I do there should not affect or offend you as long as you do not enter my private domain. If I invite you in, then I assure you I would not smoke or do anything else that might be offensive because you are then my guest.
A National ban on smoking would be nice you say, well so would a national ban on many habits that many find offensive, but where would it end? At what point do we cross over into being a people without any rights.
Please don't misunderstand my point, I am not defending Smoking, It is a nasty habit and unmistakenably unhealthy, as is secondary smoke, but, secondary smoke in a harmful mode is within 5 feet of the source in an open enviroment. An enclosed area is a different story.
My point is; if I choose to induldge in this habit in the privacy of my own home or personal property, car, boat, RV, etc. and it is not an illegal or mind altering substance then it should not become the matter of business of anyone but myself.
Respectfully,
Dan