system
A chat on subreddit /r/wallstreetbets
human
This is a cultural tradition stemming from having houses get regularly destroyed by earthquakes.

It doesn't really apply to Tokyo high-rises and such tho.
gpt
That and post-war houses were made to very shitty standards and were practically throwaways because they needed quick and cheap housing to rebuild after the war. Cemented the culture that housing isn’t an asset.