He wanted his parents money and that was his motive.
If you spent 6 years with Christopher, then I do know you. If you spent 2 years with him, I do know you. And, if you were in Samoa with him, which I doubt, you would have first hand knowledge that he was NEVER abused. If you were with him when his parents visited him, you would know he never claimed to have been abused. If you were with him when he came home, you would know he was not abused.
The important thing is not the program and not the money, but that there is NEVER an excuse for taking someone's life!!!
Almost every murderer has some "reason" why they did it....an abusive childhood...abandonment....etc. THESE ARE NOT REASONS, they are very poor excuses and excuses don't count. He murdered his mother and attempted to murder his father and would have murdered his sister had she been in the house at the time. NO REASON>>>>NO EXCUSE!!!!!
We cannot start making up excuses for people who murder others. We are very fortunate to live in a Country where we are free. I think all of us have seen or read about those much less fortunatee than we are in Countries where murder of children, babies, mothers and fathers is an everyday occurrence. We just do not go out and murder!