And yet people keep going. And why? Because those companies hire people with psychology and chemistry degrees to ensure they do. They play every psychological trick in the book to keep people coming back. And as much as anyone here (me included) think a burger from McDonald's is shit, there are people, a lot of people, who feel like they just can't live happily without their regular dose of Big Mac.

And, of course, McDonald's has used those psychological tricks to convince such people that McDonald's cares about them.

The whole thing is sick.