I a big fan of DXM. I buy mine from a RC supplier and it's ridiculously cheap compared to syrups. It's not a psychedelic drug, so comparing it to mushrooms or DMT doesn't really work. DXM is hard on the body but I really enjoy it's effects. I've been all over with this drug, a bunch of 2nd plats, even more 3rd plats and a 4th plat. I love it, but I'm currently taking a "break" from it. By that I mean I'm taking twice the recommended length break (1 week per plat) between each trip. A month for a 2nd plat, 2 months for fourth. I want to lower my tolerance a bit and maybe regain some lost magic before it's too late.
Universe cannon, I don't know where you got the habit forming thing. I couldn't do more than 1 DXM trip a week. In fact, early on I went on a binge doing it twice a week and it kicked my ass up and down the street. It messes with the serotonin levels in your brain and if I use it too often I start to feel sketched out, depressed, I get a sense of impending doom, I say stupid shit and act a little crazy. DXM is not something to abuse on a more than weekly basis from my experience, so I don't see how it can be properly addictive.
Also, if anyone here likes DXM I'd suggest trying it with DMT. It's an interesting combo. I did a second plat about a week ago and smoked 40 mg DMT and it was nuts. A low dose reminded me of salvia. The way that DXM really screws with your short term memory while on it makes the DMT really immersive. You don't remember something exists outside of where you are until it's almost over. It also makes everything feel more solid and real and recognizable. I was in a golden box hanging by a thread in the middle of a white sea of infinity. In it was god, or at least he reminded me of Morgan Freeman playing god, and he showed me a ridiculously long vertical sheet of desert themed plastic fishtank background that was scrolling really fast. Miles and miles of it. It felt like I was flying over a desert, but I was standing in front of it with god standing on the right. It was blissful and beautiful and I loved it. I decided it was awesome and hit it again 30 minutes to an hour later and it was a distinctly uncomfortable experience in this robotic nursing room in a hospital. All these square babies being processed by this awkward robot made up to look like a nurse. Made the rest of the DXM trip uneasy after that. Anyways, it's a neat experience.