I agree that opiates and psychedelics are perfect together, opiates with trichocereus my personal fav.
From "Ecstasy, Dance Trance & Transformation" by Nicholas Saunders with Rick Doblin page 82:
"Junkies and E
Siegel found that 90% of hard-drug users who had tried MDMA did not want to repeat the experience, finding little or no effect or not enjoying it."
"Junkies and ravers don't mix
Henderson says Ecstasy users are distinct from opiate users: for example, ravers take the drug in public and do not regard junkies as antiheroes."
"Ecstasy and opiates have little in common, so heroin users do not find that MDMA satisfies their needs. Social workers with a broad experience of drug users believe it is unlikely that MDMA users will go on to addictive drugs, because junkies are a separate social group. Rather than considering them romantic antiheroes, the typical ecstasy user sees them as unattractive and is strongly anti-heroin.
Most Ecstasy users take other dance drugs, and these do include addictive drugs, particularly amphetamine and cocaine. MDMA has also been referred to as a "gateway drug" to the hallucinogens.
According to "The Pursuit of Ecstasy, the other drugs most popular among Ecstasy users in the U.S. are marijuana, cocaine, psilocybin, LSD, and speed. The most-liked drug is MDMA, followed by psilocybin and mescaline."