I no longer believe that to be true. I do not think people have addictive personalities. I believe that people have a need to use some substance to help them cope. As long as there is a need to cope, there will be a need for the substance (or behaviour because gambling and shopping can also be addictions). I had a lot of difficult stuff in my childhood, if I had found something that allowed me to escape from that, I would definitely have used it. Luckily for me, nothing really worked.