LOL, in my early twenties I lived in Amsterdam, and while I didn't use anything at that time, I was pretty much surrounded by drug users.I remember finding the drinkers to be the most annoying followed closely by cocaine/speed users( God help us all when they did a combo of the two lol). I found the Heroin addicts to be the most charming, because you could have a conversation with them and they did not have an over inflated ego when they were high. So, I can back up what that study says.Long before I ever touched opiates I knew we were simply a cooler, kinder bunch.