Big Questions for Japanese! Why are Japanese homes XX?

The theme for this time's "Big Questions for the Japanese" series is "Homes". Japanese homes are full of strange things from the perspective of foreigners. Why does their value go down when you live in them? Why are people particular about newly built houses? Why are homes so cluttered? There are differences in values as well as lifestyles. We hotly debate cultural gaps concerning homes of Japan and those of the world through questions about homes.