You probably don’t need to go any further than your closet to find the answer to that one. If you are a guy, how many pair of athletic shoes do you have in your closet right now? How many do you really need? And every woman, myself included, knows that you simply cannot have too many pairs of black pumps.
We buy what we WANT. I might really need a set of new tires, but I will probably wait until the very last minute to buy them. What I will run right out to buy now is that brand new whatchamacallit that I saw on TV that promised to make my life so much better, easier, efficient; or make me happier, more attractive, slimmer…you get the idea. We buy on emotions, and regardless of what we need, our brain is going to make purchasing decisions based on getting us what we want, not necessarily what we need.