What about alcohol? Cigarettes? Poker? Penny stocks?
All of these things have contributed to people blowing their savings, futures, and ruining their own lives and their families' lives.
By criminalizing drugs, people who want to fix their behavior are unable to because they're afraid to go to jail.
What we need is support centers, like we have for alcoholics, gambling addicts, sex addicts, internet addicts, and addicts of any other kind. Prohibition didn't work for alcohol in the 20s, and it hasn't worked for drugs.