Yes, I am also aware of how I got involved with this. It goes back many years and this realization has helped me to identify reasons why I have sought this out as a solution.
As I mentioned, Dr. Gabor Mate's research and books have been helpful to me. He has worked with drug addicts in Vancouver and has, in many cases, linked addiction to ongoing stress in a person's life especially when they are young. In a way of dealing with the stress, the person turns to an addictive substance which provides a temporary relief which the person can get hooked on quite easily.