Preparation for world war 3!!!! I will surely buy a submarine when i will have enough bitcoins atleast i will be saved from huge floods....glaciers melting...sea level rising
The idea is good, but what if all the water will dry because of the war. It is better to buy a spaceship and go on a trip for several years. The war will end when you return to earth.
If wars start on earth, then it's not a fact that something will remain on the planet when you go back. Maybe there's no air to be clean, if you use nuclear missiles.