Some people today are pre-wired for drug abuse. My adopted nephew was born with Fetal Alcohol Syndrome and cocaine-positive. Crack baby. He's basically f-ed. His executive functions for self-regulation are compromised. He doesn't get cause-and-effect of normal life as a 'normal' person would. Now, extend that to how he would understand the cause and effect of addiction, and its a losing battle. Hopefully, he doesn't fall in.
Somehow he's finishing basic training and lined up to become Military Police (scary, but true). He's played tons of first-person shooter games, I'm sure, so he's got a leg up.
My guess is that a lot of First Nations rez's and "Native American" rez's/ communities have FAS complicating things.
I happened to be reading up on it last night, randomly. Seems that with FAS, people appear to be more highly-functioning than they really are, because their verbal abilities are higher than other how brain-damage typically would manifest (easier to so see if the elevator doesn't go to the top floor).