Homes designed around usage?

http://www.treehugger.com/green-architecture/what-would-our-homes-look-if-designed-around-how-we-use-them.html

The key problem is: stuff.  We need (?) big homes because we need a place to put all our stuff, which we also need (?).

We also need big homes for status and prestige.

We need big homes because that's all they sell anymore.  (But somehow I didn't get in on that.  The two homes I lived on were second hand.  So I feel -- cheated.)

But I could double the effective size of my home simply by cleaning up and removing junk.