When I did my 4th step I learned that pretty much everything I did in life was motivated out of fear, much of it irrational in nature. And a lot of that fear manifested itself in greedy, selfish behavior. So while I don't think I poured alcohol down my throat because I was a greedy person, the result of pouring it down my throat caused me to act in a greedy manner at times. Greed was a symptom of my alcoholism, not the cause of it.