However, I'd imagine there are few to no people who are addicted to milk but many that are to alcohol.
Substance certainly has an effect.
But when you get down to the root of it, the hormonal stimulus is what drives addiction.
When I was a young man and was prone to speak critically, my father would say: “Cynics do not contribute, skeptics do not create, doubters do not achieve.”
-Gordon B. Hinckley