No one will be arrested for smoking on the street or at home. A better comparison is the nation's crackdown on drunk driving. Laws allow drinking - but not while driving. Both drunk driving and public indoor smoking endanger the public welfare. And that's true - as long as they don't injure others.
Smokers find no solace in democratic theory.
While James Madison warned of the dangers of majority tyranny, he also argued that majority rule was the essence of democracy. Permitting public indoor smoking allows the minority to rule, harming the majority. And smokers are a distinct minority. My free-market friend said private businesses have rights and shouldn't be forced to ban smoking. But private property rights aren't inalienable.