What argument might a marketer of cigarettes give to defend himself against charges that he is marketing to a vulnerable population? If underage children are getting cigarettes, it is not the fault of the tobacco companies or marketers.
Cigarettes are very expensive; therefore, anyone who can afford them cannot be considered vulnerable.
Nicotine addiction is a psychological phenomenon, and people can stop smoking if they really want to.
Cigarettes are sold to adults, and they have a right to indulge in controlled, legal substances.