I attribute that effect to be correlated to a focus on the instant instead of future gratification. The poor in many (but not all) cases are poor because of a focus on more immediate ‘benefits’ rather than long term payouts.
I agree, and there are other factors as well. Our poor population performs the least amount of sustained physical labor of any poor people in history. Plus, high calorie junk food is cheap enough to indulge in.
FReegards