Peanut Butter as main food

I realize I am in a minority, but how much of a minority? Does anyone else eat peanut butter as their main source of food/calories? I eat about a pound per day, sometimes a pound and a half, maybe 2 pounds if I am really feeling hungry. Generally about a half pound in the afternoon and in the evening in shake form with honey. It is usually all I eat in a day, and have been doing this for a few years now. Anyone else?