On the sensation of chewing...
I'm a habitual gum chewer. Mainly because I'm starting to realize the cause behind emotional eating. Before I started changing my diet to avoid gaining weight at my new job position, I did a little research.
It's not so much the feeling we get from the taste and texture of food that soothes us. Chewing is an action that naturally calms us down. Because our broken, backwards, and anxiety prone brains don't associate it with danger.