We each feel what we feel, our feelings are valid even if they don't please anyone. I felt anger for my son for a long time, and for me it turned to compassion when I saw how much he hated his life of addiction and felt he could not escape it. It was pitiful to see a grown man crying in a fetal position in the corner of his room.
My feelings were no longer about rescuing or saving him, but a sadness that he felt he could not save himself.
That is how I felt no matter how you analyze it, I felt compassion for a human being who was so lost that he could not find himself.
Addiction affects each of us differently but in the end it destroys families and leaves a lot of pain in its wake.