I read an article years back that said people who naturally have a 'fast and feast' diet...ie...only eat when you're hungry, stop when you're full, tend to maintain their weight.
I presume I eat breakfast when away because you tend to be up, showered, dressed...looking pretty...before you walk out the door. At home I go to the kitchen blurry eyed and put the kettle on still in my PJ's.
People's attitude to food fascinates me. I'm from a family of pigs, their eating habits are what I would call staggering. I'm the odd one out :-)