Earlier quoted context omitted.
I'd argue that this is good for the economy. Economies are strong when money is changing hands a lot. If people hoard all their pennies, then money isn't changing hands, business isn't growing, and the economy stagnates.
On the other hand, back to talking about real people, the less you feel like you have a sufficient buffer to last until your next paycheck, the more stressed you are. If we psychologically manipulate people into spending more than they’re naturally comfortable with, we’re creating a society that’s worse off for the people in it.
If the average person didn't spend too much money on things they don't need, we'd have very high unemployment. The people with jobs might feel better and less stressed but a huge number of people would be extremely stressed and despondent.