[Disclaimer: I smoked tobacco in the past (~10 years ago for a few months in HS due to social reasons) but I wouldn't care the slightest if they're banned.]
I don't think cigs are more harmful than meth or heroin. If countries like Portugal had success legalizing these hardcore drugs and using other sorts of policies to limit their harmful effects, why go backwards and ban them? I'm all for limiting harms of cigs, especially to children who are more susceptible, but is this really the right approach to solve this problem?
Again this is a legitimate question; not being sarcastic.