Are you, or are you not aware, that a majority of the drug abuse and addiction in this country is with prescription drugs? My uncle has been turned into one of these zombies you speak of, and every bit of it is legally prescribed. Because of it he has cut himself off from his family and he’s completely unstable. He goes through fits of rage that are “fixed” with a number of psychoactive drugs.
If your argument literally relies on the fact that “doctors only do good things” and “drug dealers are bad.” Then unfortunately a simple look at the real state of our drug problem reveals that to be nonsense. With respect.