For me MDMA euphoria, has little in-common with OPIOID bliss.
But MDMA is a excellent painkiller, but it gives no itch or warm blanket.
Better then a Opiod maybe in certain circumstances. For pain.
As its not as sedating, also a shared attribute, but opioid s win.
but via total diff mechanism. The painkilling properties of MDMA.
I noticed while speeding of a hill on skates.
My GF got scared, and decided to break by frontally going for a street light.
That of-course don t work, E=MC2, you don t stop using a solid object.
You go low and slide your skates. So i did as i heard my GF say:
"i think i lost my tit" with a voice calm as a lake on a windless day.
Got a bizarre big wound on my leg, i had hand/ wrist protection

.
Or those would be damaged to. She had her tit, felt little.
At home i looked at my leg, and the wound was big, didn t feel it.
We also skated home as if we weren t wounded.
We where with lights on. Neither felt it.
MDMA euphoria i would now compare too Lysergic s.
Opioid s are way more hedonistic like drugs, fine doing nothing on it.
On MDMA or Lysergic s, nothing is never nothing, they are relaxing.
Not incapacitating, as a re-creative Opioid dose for me would be.