Wow -- those are big "if's!" The problem is that use in moderation (or lack of it) and addictiveness are completely intertwined. For example, crack is so addictive because it gives a quick rush that fades fast. The user is left wanting more in part because of how it tinkers with the neurotransmitters of the user. In a sick, twisted way, it's the perfect drug for those who sell it because there's so much repeat business. I guess in a perfect world, people could have relationships with substances where dependence doesn't happen and moderation was built in. It's just so friggin' hard to think of drugs being that way. (And I include alcohol in that mix.)

This whole question is placed outside of reality. Drugs affect people in very specific ways. Legally prescribed drugs are regulated. Illegal drugs are not studied or regulated as such because of the very effects people seek them out for. I have used drugs. MANY of them. LOL And they are illegal for a reason. Those reasons may not be the BEST of reasons, but they are, nonetheless, lawful... for now. Anything less than what these drugs legally embody are encompassed in the legal compound arena. So, I don't think your question can be answered as asked. If you could put your question as something that does not require recognizability, such as drug addiction or usage, then you may have a better chance of getting a good answer. Something that would understand that drugs, being what they are, are naturally desired and addictive in their forms and are not governed by their normal "place" in society would be able to be better and more fully understand just what they are.

First Myth: Drugs are Bad. Drugs are neither 'good' nor 'bad'. Drugs themselves are indifferent. They just are. Second Myth: Drug Addiction: Drugs are not addictive, people are addicts. It is a personality/behavioral problem (with a few exceptions) that leads to addiction. Take beer drinking. Many people drink beer responsibly, yet there are some who can't stop drinking and have to drink every day or to get drunk. Is it the beer that is bad? No it is the person drinking who has the problem. My Drug of choice is Meth. I'm an IV user (called slamming). I have been on again off again with meth. Except for one period of time in my life (when I had a lot of other stuff going on) I have used moderately, used on weekends/holidays only. Never been to jail, never did any criminal activity (other than buying and using, no robbery, theft, murder blah), never used (or drank) and drove, never turned anybody on to drugs, etc. Out of the 20 year of drug use 6 months (at most) I got carried away and used nearly nonstop. The problem was not meth, the problem was me and my life. I was dealing with a lot of stuff, like a couple of deaths, a losing my job, having my house burn down (an arsonist) and a few more things - all happening real close together. Using took me away from my problems. Instead of dealing with my problems I turned to excessive, nearly nonstop tweaking to hide/bury those problems. Unfortunately the people who do turn to drugs usually have a lot of baggage, suffers from child abuse, undiagnosed chronic depression, mental and emotional instabilities, financially challenged (Read POOR) and other stuff. A good chunk of addicts start off as teenagers. Teenagers deal with a lot more stress from just being a teenager than adults. Starting on drug use then is a huge mistake because instead of working through those natural problems of being a teen they "self medicate" and fail to learn coping skills which they need as adults in order to function so they end up self medicating even more. Our society thinks the problem is the drug. That's the biggest mistake in the issue. The problem is the people who use to excess. Go to any NA or AA meeting and sit there and listen to people "share" their life stories. You only have to hang around a little bit to see the big picture - nearly all of them drank/used to deal with other things. Yeah it takes a long time for them to figure that out, but when the do figure it out their sobriety comes far easier.