I love the optimism but the only realistic preparation for an "end of the world" scenario is to bend over, place your head firmly between your knees, then kiss your ass goodbye. In the meantime happy trails ;-)
Even without the oft-prophesied "nuclear holocaust," the world will end within 12 years anyway, unless the USA (only, in the world) gets rid of all its cows, motorcycles (including those with Diesel internal combustion engines), etc.
“You better put down that gun. You got two ways to go, put it down or use it. Even if you tie me, you’re gonna be dead.” "John Russell" (Paul Newman), Hombre