[bsder]

I think it's highly variable.

Some people love opiates. Personally, I hate the feel of opiates. My brain feels like it's encased in concrete. This is not a good feeling to me.

I consider myself fortunate that I don't like the feel of opiates as it means that I didn't become addicted to them from the times I needed them medically.

I will, however, point out that musicians almost universally warn other musicians not to do heroin even once. Musicians aren't exactly straight-laced, and, if they're warning you about something, you probably ought to listen.