> we have no reason to believe he was trying to kill anyone.

If someone gave a loaded hand gun to a small child, there might not be any reason to believe that this person was trying to kill the small child, but when the child inevitably shoots himself or someone else, the one who gave the child the gun in the first place shares at least some of the blame.

You may protest that children are not comparable to adult drug addicts; to this, I’d suggest taking a walk through any major metro area in America and deciding for yourself if “willing and aware” are appropriate words to describe these addicts.