Yeah, talking to a couple friends who had gotten back, chicago dope is nothing compared to what they got over in Afghanistan (go figure though). However, it seemed to me they didn't get physically addicted over there, but now that they are back (at least the two people I know of), since they had a taste for it, they were using it as a coping mechanism, then got more frequent, then turned to addiction. Just my 2 cents.
thats where most chicago dope comes from....by the time it gets to you it has been stepped on 300 times