I don't like breathing other people's smoke, but if we can put a man on the moon, my guess is that we can find a way to ventilate the smoke in one section of a bar or restaurant away from the non-smokers.

The danger in that is that you find yourself promoting cancer.

He doesn't like being told what to do. He's reacting against the neo-Puritanism that you mustn't smoke, you mustn't drink, guns are bad.