Everyone commenting on this thread seems to make the assumption that all smokers in fact smoke cigarettes inside their residence. As a 26 year-old semi-heavy smoker, I've never once even considered smoking inside my apartment, nor do I know any smokers who do so. This may be dismissed as anecdotal by the type of vehement anti-smoking zealot you seem to be,But I believe it's an accurate depiction of smokers at large.