Whether it's peak oil, peak water, peak fish, Peak Oil attracts people who are sick of a society that places quantity over quality, and THAT is a very healthy attitude. There is an over-arching eco-reality here that is bigger than the sum of it's parts.
The psychological pain that peak oilers feel is the grief of people who realize they have been or are complicit in matricide; Mother Nature being the victim.
If you insist on comparisons, between peak oil activism and drug use, I suggest that "acknowledgment that there is a problem" is more like the first step in a twelve step program to quit gluttonous consumption. Peak oil interest is about finding solution to the problem, not the problem, itself.
A great book on this is James Hillman and Micheal Ventura's book, "We've had a hundred years of psychotherapy and the world's getting worse."
From a site that discusses this great book:
In 1992 two books came out that began to unsettle the community of modern psychotherapy practitioners and their clients: James Hillman and Michael Ventura's We've Had 100 Years of Psychotherapy and the World's Getting Worse and Theodore Roszak's The Voice of the Earth. Both of these books called into question the modern practice of psychotherapy in the face of the continued decline of the natural world. Both authors assert that the suffering an individual experiences is linked to more than their personal story, it is connected to the suffering of the earth and the nurturing systems that sustain us.
http://www.naturalchoice.net/articles/ecologic.htm