Junkies and constant pain sufferers 
most of the time WOULD be a lot better off getting loaded and / or self-medicating pain using cannabis, (smoked or edible) 
in combination with a little wine.   It's a great "high"
... and when it wears off, they might be a little spacey / hung-over

but not "sick" from heroin / opioid withdrawal.    Much cheaper & easier to "score" too.   

Just sayin'   =D


...
"You're welcome, America."
 - George W Bush