Junk food is cheaper. Doesn't mean you just throw up your hands and say, "Well, I'm not wealthy. I have to eat like shit, I guess!" or "I can't afford a gym. No way I can figure out how to exercise now!" They really think poor people, unskilled laborers, or people down on their luck, have no volitional will or executive functioning at all, so they can't be responsible for their well-being (or anything, really).