[AnIdiotOnTheNet]

I am not operating off any data here, and as far as I can tell neither are you so that seems fair, but it is quite possible that our conception of what is "filling" or "satisfying" is intrinsically tied to the cost of the meal. Processed food and fast food are cheaper and we know it, so if we get less of it, it is possible that that fact alone makes it less satisfying.

[handrous]

> Processed food and fast food are cheaper and we know it, so if we get less of it, it is possible that that fact alone makes it less satisfying.

Food pricing, especially at chain restaurants and fast-food joints, tends to support this. It's not uncommon to pay 20% more for double the food, either because larger sizes aren't much more expensive than smaller ones, or thanks to "combo" meals. Restaurants seem to be optimizing for total sales, not margin on individual items, based on how they price—in many cases their entire menu seems to exist only to make the "combo meal" look like a good deal, but of course it may be more food than you really wanted.

To say nothing of the phenomenon of all-you-can-eat buffets...