well the only problem i have with smoking is that is personal habit that affects the people in ths surrounding area in a negative way possibly affecting the health of people that do not smoke,
I think that people have exploited this fact to undermine a person's property rights.
Someone privately owns a piece of property or business. They wish to smoke in it, and allow others to do so. The government, fueled by self-righteous arrogant pricks, feels they have authority to tell someone what they can do with their own property, and over such a mundane act as smoking. Don't want to be exposed to smoke? Don't choose to patronize establishments that permit smoking.
It's that simple.