They had to.
Their parents were all smokers.
In high school there was the smokers’ cadre across the street, in the alley near Schepke’s flower shop. They formed a huddle of shoulders, biting into their butts, tightening as one amoebic blob during the winter. If you had balls you smoked in the bathroom and you knew which bathroom to smoke in. But the majority smoked across the street, before school. The majority where semi-white trash. The kids living in brick houses above the bluff also smoked, only they didn’t have the balls to do it near the school.
It would tarnish their reputation.