Hey, wait a second, I thought my comment was still in line with the spirit of this thread. Sorry, it certainly wasn't my intent to derail it. Besides, I'd think you'd prefer me doing what I did instead of taking you to task for vascillating intra-post on your stance on alcoholism (e.g., implying that alcoholism is beyond a person's control, yet asserting that a person can control it).
Okay, I can buy that.
My impression is that you - DJ - subscribe to a diathesis-stress model of alcoholism. In that model, both genetic and environment influences interact in a dynamic fashion to result in the manifestation of the pathology. So, while a person may have a "gene" for alcoholism, that gene really cannot be expressed in the phenotype unless, of course, the person drinks alcohol. Similarly, you could have a "gene" for obesity, but you'll never get fat unless you eat enough food. The diathesis-stress model is a bit more inclusive and allows for more flexibility in determining etiology as opposed to the more dualistic (and inflexibile) genetics versus environment (i.e., "nature versus nurture") application.