Most people's addictions are caused by traumas in early childhood.
Escape or self-medication is what an addiction is.

As a child, we had to bury the trauma in order to stay alive. Now, as an adult, we don't even remember the trauma was there. As an adult, being shown the scenes, the causes, the interconnections, allows you to rework those pathways crystallized as a child.

However, the problem with our (american) society is that we treat drugs whimsically, as entertainment, as a lark.

LSD, DMT, Ayahuasca are all much better after you have learned to meditate, gained some control over your mind and started working on your shadow self.