Except that there isn't even any real evidence that 2nd hand smoke even has a real impact.

Just because you haven't bothered to look for it doesn't mean it doesn't exist. The very first hit I got from a Google search on the subject (read more about it here yielded the following information:

The Environmental Protection Agency firmly maintains that the bulk of the scientific evidence demonstrates that secondhand smoke -- environmental tobacco smoke, or "ETS" -- causes lung cancer and other significant health threats to children and adults. EPA’s report ("Respiratory Health Effects of Passive Smoking: Lung Cancer and Other Disorders," EPA/600/6-90/006F) was peer-reviewed by 18 eminent, independent scientists who unanimously endorsed the study’s methodology and conclusions. Since EPA’s 1993 report which estimated the risks posed by ETS, numerous independent health studies have presented an impressive accumulating body of evidence that confirms and strengthens the EPA findings. It is widely accepted in the scientific and public health communities that secondhand smoke poses significant health risks to children and adults.

A U.S. District Court decision has vacated several chapters of the EPA document "Respiratory Health Effects of Passive Smoking: Lung Cancer and Other Disorders" that served as the basis for EPA's classification of secondhand smoke as a Group A carcinogen and estimates that ETS causes 3,000 lung cancer deaths in non-smokers each year. The ruling was largely based on procedural grounds. EPA is appealing this decision. None of the findings concerning the serious respiratory health effects of secondhand smoke in children were challenged.

Tobacco is the only product sold to the general public that, when used as intended causes the death of the user. OK, so go ahead -- use it and die. Just don't use it anywhere near me.

tanstaafl.