One time I was injected with demerol via iv. That's the closest I'll ever get to shooting heroin thank God. I went from the worst pain in my life to a profound euphoria and felt myself floating up and away, not in the same way as a hallucinogen where there is ego loss, but instead just ceasing to actually be a person at all, let alone with cares or concerns. I hope dyings like that. I know I'd get addicted to opiates if I was on them. Though, I suppose anyone could say that.