Morning Scepticism: Role Models

The problems that come with drugs and binge drinking in our society demands an explanation, and plenty of explanations are offered. One convenient target is that of the role model, those athletes and celebrities who are constantly in the public eye and are looked up to by many. But I wonder how this correlates, does someone do cocaine because Ben Cousins did? Or perhaps drink to excess because David Boon did? The most reasonable explanation to me is that the reason that people use drugs or binge drink is the same reason as those celebrates, they are both effects of the same cause - not causal to effect.