"Si vis pacem, para bellum"
Its very important to protect the civilizatory process from fallout, as severe or black-swan conditions might swipe what we have acomplished so far, and history is full of examples of advanced civilizations that were vanished and we had to dig out from the mud slowly without a chance to learn, starting all over again from scratch.
The civilizatory process is fragile and is always menaced by all sides, all the time. Its good to be always vigilant and prepared to anything.
It seems prudent. We may be entering a period of global upheaval and panic where large parts of human civilization will not make it past the next 100 years. It makes sense to attempt to preserve what we've accomplished in a way that will last for 1000s of years.