Work hard, buy a home, start a family and continue to upgrade your home until everyone has enough room. This has been the blueprint for lots of homeowners for the last fifty years but there is certainly a shift in thinking that could change all of that.
Interestingly, Americans live in much larger homes than most people in other countries throughout the world. The U.S. Census reported in 2006 that the average single family home completed had 2,469 square feet which was 769 feet more than in 1976.
Once the children are grown and have moved out, homeowners are finding they have too much room. Even if their home is paid for, they have higher property taxes, insurance, utilities and maintenance on the larger home than they'd have if they were living in the "right size" home.
Some homeowners state that they're keeping their larger home because it has luxury features that smaller homes don't have. There's a movement that seems to have started in the United States to find the "right size" home with the amenities and convenience that homeowners want.
This philosophy has been expressed by Sarah Susanka in her book Creating the Not So Big House. It proposes a house that "values quality over quantity with an emphasis on comfort and beauty, a high level of detail, and a floor plan designed for today's informal lifestyle."