Children pick up on the smallest thing their parents do.
I think that if a child sees the parent do somthing, they will want to do it also. We know that most of the bad habits that shorten's ones life begin in childhood and early adolescense. Smoking, drinking, drugs, and overeating all tend to follow this line. That is why we know also that the tobacco companies targeted kids,as do junk food producers, and I believe, brewers and distillers.