> Absolutely immoral. Drugs like cocaine, meth, heroin, etc, make you into an addict once you start taking them on a regular bases - and that happens quite easily.
You've listened to and believed too much propaganda. It has been and is illegal to conduct studies on most of those drugs. So their actual effects are unknown. What scientific knowledge there is indicates addition rates are low ~20%. Not nearly a sure thing. btw nicotine and alcohol dependence probabilities are higher.
[My opinion] It is likely that probability has more to do with the individual user than the individual substance.