Perhaps it's a comfort thing-it 's possible that the snack choices won't include a nutritious casserole, but they'll contain burgers, hot dogs, and a range of other items that won't do much good to your waistline. Often it can be as easy as the way food smells – find someone who doesn't like the scent of fried onions, and maybe you've just discovered an alien existence.
We just crave unhealthy food more often than not because it's easy. We're used to it, we don't have to sit down to eat it, or pair it with the correct side dish. It is fast and has good taste. All we have to do is get to the point where we want a safe alternative to be as hassle-free as possible. To several, a sandwich is the best choice in this case – only as long as there isn't too much butter on it, anyway!