People volunteer to become addicts. All of us who kicked an addiction are an indictment on those who didn’t. It’s not easy but it’s something you want to do.
People don’t die from addiction. They die from choices. I know adrenaline junkies who are dead from their choices.
Some people become chemically addicted very easily and it is no longer a choice. The brain can no longer think clearly and turns every action into an effort to obtain that drug. It is impossible to understand unless you survived chemical addiction.
Nomatter what the consequences are, these people will not see them. They don't care about their children or even themselves rotting away (see Krokodil). They will keep abusing the drugs until they die unless someone physically intervenes on their behalf.