Zuck has spent $270 million on his Hawaiian bunker. It will have to be maintained, stocked and protected at further cost. In the end one of two things will happen. One, he is right and he and his ilk will enter their holes because civilization has collapsed. If so I hope Virgil shows up to guide him on his journey. Two, he is wrong, how embarrassing, and the world would have watched a man with everything to live for throw it away at the expense of our future. In regards to your story regarding our wonderful planet we call home you have to understand how Zuck and the billionaires see it. To them the earth is not a home, it is not beautiful, it is just an asset to gain power. When that asset no longer yields, there is no longer interest. And staying cooped up with those you exploited in the failed society you created? Well my friend that is a liability.