I guess were all different.I find the opposite to be the case with me when it comes to benzos and opiates.To me they seem to compliment each other perfectly and each adds to the euphoria of the other.I agree that morphine (or really any opiate in high enough doses )is plenty sedating and euphoric on it's own.As I'm sure everyone already knows,back in the old days before they developed dedicated tranquilizers opium and morphine were the tranquilizers of their day in addition to being pretty much the only choice for analgesics.Certain benzos (particularly Xanax and Valium IME)are quite euphoric themselves in high enough doses.At least I think so.Lots of people don't find benzos euphoric or recreational at all so,like I said,were all different.Tons of people find cocaine,amphetamines and other stimulants to be pleasurable yet they are a hellish nightmare to me.There's an ass for every seat I guess.