That seems like a good enough scientific analysis to me, but I gotta say that (addict or former addict) is pretty uneccesary an addiction is an addiction regardless of legality. Someone could honestly be addicted to donuts, and it could cause a lot of the same symptoms you describe due to sugar intake, and the desire for more so this thing that's suppose to be a smiley indifferent is about how I feel even when an accurate scientific analysis points out the downsides of the drug.