IMO nothing touches opiates as far as addiction potential goes. That shit becomes as important as food, water, and sex to an opiate hijacked brain.
Still, yes I think they should be completely legal. Legalizing these drugs would completely destroy the black market for these drugs and greatly mitigate deaths from shit like fentanyl and carfentanyl.
This idea comes from the Rat Park studies which are now pretty much considered to be bad science and not possible to replicate.
https://en.wikipedia.org/wiki/Rat_Park#Criticisms
No it was something a meth addict said on a tv show I was watching
I don't think that disproves the principle though, and I can attest to how different contexts rapidly change my desire to use drugs.