Why are billionaires building bunkers?

The rise of "preppers"—individuals who prepare for imminent global disasters—is increasingly visible through the construction of luxury underground bunkers by tech billionaires. Mark Zuckerberg is reportedly spending $100 million on a Hawaiian estate featuring a massive survival shelter, reflecting a broader trend among the elite to safeguard against threats like climate change, nuclear tension, and AI risks. These high-end bunkers function as both survival tools and social status symbols, equipped with amenities like gyms and cinemas to maintain a high standard of living without compromise. Beyond the wealthy, the "prepper mentality" is fueled by a commercial industry in the US selling freeze-dried food and survival gear. This movement highlights a paradoxical anxiety: the very individuals responsible for building the technological future are among those most fearful of its potential for apocalyptic destruction.