> Obviously the ill effects of narcotics (such as addiction) are the driving force behind these prohibitions, but in my opinion a fair bit of the current "scheduled hierarchy" of narcotics is not really based on medical science.

Sounds to me like we're in agreement. I'm not sure why you started your comment with "Mmm, no." The laws aren't perfectly consistent on which side of the line they place different substances on (for a variety of historical reasons), but the underlying reason as to why drugs are illegal in the first place is (quite obviously) because of their addictive nature.