Earlier quoted context omitted.
This is the bourgeois line on drugs, believed exclusively by people who haven't spent much time around crack and heroin addicts [0], prolonged exposure to whom eliminates the comfortable fiction that what people put into their body is their own business . [0] Or severe alcoholics, for that matter.
I'm not sure if you're being downvoted for your viewpoint or your usage of "This is the bourgeois line on drugs".
Feel free to substitute "middle-class" for "bourgeois" if it sounds less political or inflammatory to your ears.