The other day, I was building a chicken coup. While I was working, I was playing the Fallout 4 Diamond City Radio sound track. It reached the Bing Crosby song Accentuate the Positive. When the Andres Sister start to sing, they say consider Jonah in the whale and Noah in the ark. Then it occurred to me. Noah was the ultimate doomsday prepper. His world came to an end as literally as is possible. However, thanks to his hard work, he and his family was able to see the sun again. There are many reasons we can come up with to be prepared for hard times. One of them may be, some of the people may survive this, and they will be able to rebuild civilization.
You can read about Noah in Genesis chapters 6 through 9.