benzos cut opiate euphoria anyways; so you were looking for sedation not euphoria
there's a lot of opiate users like you, "having a good time" isn't their agenda, they just want to get as fucked up as possible for whatever reason. I like being in control
after some period of chronic use, having a good time on opiates alone becomes impractical, then impossible. there's nothing special or particularly different about the way i used.