Have you ever wondered why we all buy so much stuff? Well, I have. It doesn’t matter if you’re a subscription hoarder, a fashion addict, an new-iPhone fanatic, an aficionado of buy 3 get 1 free, a serial slipper-in adding an extra and very irrelevant item to the bag, and so on, we’re all guilty of the same thing—buying what we think we need, not realizing just how little, in fact, we need it.