Experiencing oral DMT with harmala alkaloids has always given me wonderful trips. They are filled with love, euphoria, and deep meaningful content. I trip every Saturday and much of my week is spent looking forward to, planning, and thinking about the upcoming trip. Is this a habit, an addiction, an obsession, or a fun and interesting diversion that is similar to taking a hike in the mountains? I struggle with that question. Certainly psychedelics take up a great deal of my conscious thought and my activities. I research, buy, and experiment with different natural substances and different ways of extracting and ingesting them. I read psychedelic literature and forums, listen to Terence Mckenna and Alan Watts, and thoroughly enjoy the lifestyle. How does this differ from people who smoke too much crack, or shoot heroin, or drink alcohol constantly? I guess my intensity level is similar to theirs, but my intake of the drugs are probably more spaced out. Also the impact of my drug use is not overtly harmful (that I can detect) to myself or my life or loved ones. I guess if it is fucking up your life, thought processes, ability to function or be happy then you probably have a problem.
I don't think smoking freebase DMT is addictive as the experience is a bit too much if done too often, you'll burn out. However, changa may be a different story. At low to mid doses that stuff is similar to weed in that it can be thoroughly recreational and enhance music and turn your living room into a carnival. I have had a few afternoons smoking changa on and off for a few hours and it was a damn good time, but even then it starts to gnaw at you. Still, the positive and downright euphoric effects of DMT can be habit forming if it treats you right, but in the long run, like others have said it can kick you in the balls and make you put the pipe down for a while.