Agreed. The full-agonist properties of Methadone have made a huge, recovery-driven (although I still smoke marijuana, drink socially, and take the occasional benzodiazepine and/or psychedelic/dissociative), and positive changes in my life and I'm no longer stuck with a purely heroin-addict-driven mindset.
I only managed to stay in this state for a couple months or so on Suboxone (buprenorphine/naloxone). Buprenorphine's partial-agonist properties just don't work for me or for my IV heroin cravings. I acted on my triggers, sold my 8mg Suboxone strips, and had a constant tax-free supply of money from selling my strips; that supply of money went towards mass amounts of IV heroin (1-2.5 grams, on avg), IV cocaine, pharmaceutical-grade opioids (i.e. Dilaudid, Opana, Roxicodone, and Fentanyl) loads of Xanax, K-pins, and Valium, Molly/MDxx/MDA, RC's, Ketamine, MXE, and psychedelics.
Even though I fucking hate the clinic I have to go to in Dayton, OH (Project Cure is a hell-hole of a MMT clinic), the Methdone has been the most helpful ORT-maintenance tool I've ever had or taken. It's like night and day when I compare how well I'm doing on MMT, in comparison to bupe. I loved how you could just get a script for Subs, fill it, and take them all home, at once!

But the bupe's partial agonism wasn't my style and gave me awful side effects (e.g. insomnia, drug cravings, anxiety, odd CNS or PNS stimulation that felt like the uncomfortable CNS/PNS stimulation you get from residual effects of amphetamine salts, m-amp, d-amp, ect.). I am hoping I move to Cbus or Cincy and transfer to their clinic or hopefully, they make a new M-done clinic in Dayton... *sigh*