From the way you describe it it feels like we might have pretty similar brain chemistry when it comes to opiates because my favorites are almost the same. For me it’s #1 opium and #2 morphine.
My first ever experience while completely opiate naive was pharmaceutical injectable morphine and it was honestly something else. A few seconds after the injection I remember feeling like I was inside a warm pink cloud. It’s hard to explain but it was almost visual in a way, like my whole perception softened and everything felt distant and dreamy. I even had very slight almost-hallucinatory sensations.
At the same time I felt that classic warm nausea low in the stomach, that heavy wave of warmth spreading through the body. Weird thing is that feeling of warm nausea felt strangely familiar to me, like I had experienced something similar long before I ever tried opioids. Sometimes I wonder if maybe as a kid I was given some opioid medication for an illness or something and that sensation somehow stayed in my memory. It’s just speculation but the feeling was oddly recognizable.
After that I understood immediately what people mean by the morphine nod. It was very deep, very warm and extremely comfortable. Compared to other opioids I tried later morphine always felt the most natural and “complete”.
Opium for me is still number one though. It’s slower, warmer and more dreamy. When you hit the sweet spot the relaxation is on another level.
I also relate to what you said about staying away from them nowadays. I had my time with opioids and I respect how easy it is for them to take over if you’re not careful.
Honestly though I would love to have a doctor who could prescribe morphine properly, or to have a stable supply of opium. In my country the only opioid that really exists on the street is heroin, even though it’s usually quite pure. Lately I’ve been playing around with 7-OH, but honestly it’s nothing special. It’s nowhere near morphine, opium or even codeine in terms of the feeling. I even have a stash of it and I don’t feel the urge to take it every day.