> Why Medieval Rulers Loved Castles.
Why do men love paper money?
Castles is a thing because it's a thing. Like Rai stones or Bitcoins hashes. They are hard to make.
Once you have a castle everyone rally's around it, they know it will be there in 200 years. When you are old you know your investment will still have the same value to give to your children.
What China is doing in the South China Sea is very cool, making islands. I'd be nice to be in a world humans did it without the power grab as an excuse, but I guess that's the value add governments need when the world is full of sad nihilists on the mainstream media train against building great things, only destruction.