Tell that to Sigmund Freud, Robert Louis Stevenson, Sir Arthur Conan Doyle, Keith Richards, most of the artists, writers, and actors of the last 150 years, and in my own experience: Doctors, lawyers, politicians, district attorneys, judges, cops...all whom I've partied with at various times doing coke. And I might add: myself. I did cocaine for the first time in 1979. I still do it occasionally on a weekend night when I want to party. The result? I am more successful in my life than anybody I went to school with, anybody in my family, and pretty much anybody I know in my social life. I live in 5200 sq. foot home with a pool and a sport court and do whatever I want whenever I want.
Remember....for every person out there with an addictive personality who can't handle things and becomes "addicted", there are hundreds of thousands of people with normal physiology who CAN drink and have fun with recreational drugs without it becoming a dead end.
Heck, there are a lot more alcoholics out there than anything. But that doesn't mean that the BILLIONS of people who drink socially are all heading for a dead end.
It just means that there is a danger of it IF the genetic makeup of your body and mind lends itself to destructive addiction. And if that's the case...it doesn't matter what it is...a person who is like that is going to get hooked on SOMETHING. Probably prescription drugs in this day and age.