If they hadn't made them illegal back in the sixties or there about, we probably wouldn't have had what you describe here...
They make drug cartels rich, people are murdered over drugs, people die of drug over doses, and illegal drugs ruin lives in general. In a way anyone that uses illegal drugs are an accessory to the deaths of people that are murdered over drugs. So you you really feel comfortable with the fact that people are being killed to get your illegal drugs to you
Alcoholic drinks use to be illegal here too for a short time. However when they realized that all the stuff you said in that quote was beginning to happen, they sensibly made alcoholic beverages legal again.
We've been fighting a drug war since the sixties and we haven't made a dent in it because making them illegal made them have to be sold by the bad guys. And it made throwing the basically innocent user in jail the defacto punishment with no rehab to keep them from using drugs.