I hate to say it, but a lot of what makes us susceptible to addiction is hierarchy, or inequality itself. People of a poor stature who have to endure much more stress than those who have stable, good paying jobs and find their selves trying these drugs to escape the pain of being "worthless". This trend is reflected in experiments done on Chimpanzees, where it was discovered that Alpha males who get to eat all they want and have choice of females were much less likely to try a drug and become addicted to it, than the Beta males who had to fight each other for food and had lesser females to choose from. Maybe the real solution to this problem is building a social order that has true equality in mind?