Some interesting points of view here.

Some things Ive noticed in my life and the exposure (no necessarily personally) Ive had to drug-use (from nangs to heroin)...

Big difference between use and abuse
Some people are pre-disposed to addiction
Some people are pre-disposed to violence

Its extremely differcult to generalize about substance use/abuse. I believe the outcomes from use have a-lot more to do with the person than the substance.

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K.E.R.S!!!1