I suppose it depends on your outlook on what "needs" are. The fact is most people in a society such as America tend to have additional cash set aside so they are able to afford themselves outside of basic needs.

In all I think society defines what "needs" are as oppose to what actually are "needs" and purely "wants." A poor person in some third world country might "need" food but "want" a car which on the vice versa a person in America might say that they "need" a new car to get to work and "want" to eat McDonalds.