I wonder why eating is not addictive. Perhaps it is common enough in life (and mandatory) that we do not regard it as such, but I came to realize that I have been using food as a substance to numb my emotional low.
Not exactly pathological, but I find myself constantly in search for something to fill my mouth. Possibly related to the tense jaws of people under constant stress, or pacifiers for babies.
Or just boredom.