A rabbit hole, blaming oneself when a grown adult doesn’t want help getting off drugs. Should offer compassion and help but they must want it, must make the decision THEMSELVES.
Unfortunately these addicts are responding to these addictive chemicals the same way the insects do by the plants that intoxicate them. In the case of the insects, they die from dehydration. The only way to free one from this biochemical hold is through a controlled time of forced stoppage of the chemicals. That process must be done safely. As far as I am concerned these addicts have become nothing more than insects getting these chemicals into their bodies until they die. For their own good, forced rehab is the only way to break the biochemical hold on these poor souls.