Would you classify desires under needs or wants, we have our needs all right which we must satisfy but then there are wants also; things we don't necessarily need but want to acquire maybe because we need to keep up with the status quo or because we simply feel we can afford them- at once or over a period of time.
Regardless of the manipulation of the markets humans (most of us) just want a lot of things even though we don't really need them all. If we don't have the discipline we will just keep trying to get everything and run into more debt.

Even if the market was to be stable and free from manipulations, not everyone will be able to afford all they want, or even the basic life amenities that they need.