Is addiction a simple chemical hook -- give enough cocaine to 100 people for 60 days and they will all be addicts -- or is it all about the social context?

It's more about context that people used to give it credit for. 

The analogy of Rat Park sticks with me. 

Addiction is not you, it's your cage. 

http://pandawhale.com/post/57118/the-likely-cause-of-addiction-has-been-discovered-and-it-is-not-what-you-thinkjohann-hari