Not all bad habits are created equal. Something like smoking is certainly an awful habit, and those who do it have a dependency on the nicotine, but it doesn't present in the same way as other drugs. Probably due to the fact that it isn't illegal. That means it is very easy and safe to obtain. You wont often find somebody jonesing for a smoke rob a liquor store, or anything like that. I am sure it HAS happened, but that would be the exception, and not the rule. With addicts, it isn't really JUST the drugs that are habit forming. It becomes very.... ritualized. To the point that it isn't enough just to have the drugs, it needs to be had in the right manner. For me, I was also selling a lot. I loved going to my suppliers, getting a few hundred pills from him, selling off only what I had to to maintain my own habit, then spend the day with a pile of powder and a straw. It got to the point where I just planned EVERYTHING around that. And I couldn't truly enjoy anything any other way. It becomes so ingrained that you don't even realize it at the time. There is a rush in knowing that it is illegal, and highly dangerous. You get addicted to the whole process. Even though you know it is undeniably wrong, you don't really want to be right. It eventually becomes the single most important thing in life. EVERY single day is spent either in desperation as you try desperately to score, or in a near coma from getting to score. Everything else becomes second priority. Eating, showering, working, playing, family, friends, girlfriends. All of it. You choose the drugs EVERY single time. If you weren't obsessive to begin with, you certainly will be really quickly. I was already obsessive. Drugs did not help at all. I can think of ZERO positives in drug use. Not in retrospect, at least. I obviously liked SOMETHING about it while doing it, but I don't even remember what that is....
It is a messed up way of life, but a way of life nonetheless. This is why just stopping isn't good enough. We will physically get better if we stop for a long period of time, but it takes much more than abstaining to remain that way. It's changing everything else that is difficult. When every aspect of your life is reliant on the drug and drug seeking behavior, you need to change every aspect, not just some of it. Drug use stunts development. And most addicts are already stunted to begin with. That is how you end up with what is essentially a man child. And I am no different. I am 25 years old, but I stopped developing emotionally and mentally right around the time I took that first pill. Intelligence has absolutely nothing to do with it. It is a very complicated disease to suffer from, and to treat. It is unilaterally bad. And not many things are. There is NO good that comes out of any addiction, regardless of drug of choice.