What is the reasoning here? I get that in any situation you'd obviously try to save your life and the lives of your children, but THE WORLD IS ENDING and let's assume there's no chance of survival. Why create such chaos for yourself?
If you found out that the world was ending in 2 days, the planet was going to be obliterated and there was no chance of survival, what would you do? Assume that everyone else also knows the world is ending so things are likely not running in a "business as usual" fashion.