I love the isolated smoking rooms I have seen at airports: a sealed glass room with just enough ventilation suction to keep the smoke from flowing out the door when somebody enters/exits. I have seen one so smoky that it looked like a thick San Francisco fog. They want to smoke, then they can breath it.
But one thing I have never even seen considered:
If smoking is banned because of its effects on others, what about everything else that smokes: cars, powerplants, etc. Should people who don't own cars be forced to breath filthy car exhaust? Should people who use gasoline powered cars have to suffer diesel fumes? Pollution from cars and factories is every bit as bad if no worse than cigarette smoke, but I don't see the government banning them.
As a nonsmoker, I appreciate all of the new laws. But as someone that also likes to see justice and logic prevail, I don't see the consistency in banning public smoking while permitting all sorts of other equally harmful chemicals to saturate the environment.