Growing up in the Detroit area, people would think you were crazy if you didn't want a vehicle. It was ingrained as a rite of passage. Yes, when Henry Ford wanted to create an affordable car, he was looking at making travel off the farm easier for people (more time for family to be together instead of taking care of the horses, repairing the wagon, etc). But toward the end of his life, he realized that the vehicle was tearing families apart vs. bringing them together. (I heard this information on some Henry Ford video, something similar to the American Experience series, which is why he created Greenfield Village).
So for many families, accumulating items that make life easier is originally an innocent endeavor. Rock leads to wash board, then wringer washer, then electric washer. Now we can purchase washers that have 15 settings, are 5 feet tall, and require more space in our homes. But at the end of the day, all they do is wash clothes. I am for advancing technology, but as a need, not a status symbol.
It is basic supply/demand. While some of these demands can be categorized as needs (better farming techniques to increase food production for an increasing population), it is easy for needs to morph into wants cloaked as needs.