I don't really know if this can be considered 'normal' as well, but I know that at least for me, it's become an addiction. I know I'm doing it, but I can't control it because it is my only way of being comforted. I've actually had moments when I started crying while eating because I don't really want to eat it, but it just comforts me... that might sound a little odd, so I don't know if anyone knows what I'm talking about.