It's interesting to me that most people find opiates sedating, and even report that they cause them to have "mental cloudiness." This class of drug gives me lots of very positive, feel-good energy, and my brain fires on all eight cylinders when I have any opiates in my system. In fact, I have a very difficult time sleeping if I eat pills too late in the day, but a smidgen of a benzo fixes that, most of the time.
There was a time when I didn't like opiates, at all. When I was in the hospital after having birthed my first child, my doctor had ordered T-3 for pain and I hated the way they made me feel. I even asked the nurse if I could just have some regular Tylenol, and she told me no, that the doc had not ordered it, so thus, I had to take the T-3 or nothing at all. Having to take opiate pain meds was one of the aspects of having dental work I liked least. That started to change up about 20 years ago. It didn't happen overnight, of course; I went from disliking them, to tolerating them OK, to liking them, to loving them, and eventually, of course, to "needing" them. I am back to the "loving but not needing" stage, and thankfully, lack of funds will keep it that way for a hot minute, well, that and the fact that I got really tired of the addiction aspect. My body can't take another round of suck-ass withdrawals.
I think people who don't like opiates are nuts, but then again, lots of people can't wrap their heads around the fact that I detest weed and can barely tolerate alcohol. Different drugs for different mugs.