It's difficult not to reflect on what experiences contribute to adults who develop disorders, including dependence/abuse of substances as well as personality issues. There is some evidence of genetic links to say borderline personality and other disorders, the same with dependence or abuse of substances. There is also evidence that abuse experience in early childhood can contribute.
What imo we should never forget, is our free will. We all have aspects of our personalities that are less attractive, most of us keep them under control. I am not lacking in empathy/compassion for people who find life more difficult than others. As I said earlier, I'm more sympathetic towards their victims.
So far as Rob Kitchener is concerned, he was fortunate in having an excellent psychological assessment which will have recommended appropriate therapy and how best to access that therapy. Rob is in a position to get private treatment, so avoid the awful NHS waiting lists. He hasn't has he -