As we have had to cope with for millions of years as the bloodline of organic ooze on this planet. Some of the right ones suited for the new equilibrium adapt, but many lines do not and unfortunately become evolutionary dead weight.
How can we be so sure that one form of evolution or de-evolution is better than another without knowing what that massive event might be? Instead of some fireball that sends us back to the stone ages, what if that massive event is an intelligent alien life that lands here and wants humanity for outsourcing the customer service for their Internet porn surfing? The skills for one scenario are really bad for the other.
The solution isn't to all go Idaho survival camp, waiting for some armageddon to send us back into hunter gatherers. That's like saying we should all live in disposable grass huts instead of brick homes, because we never know when the earthquake or hurricane is going to hit and nobody dies having a grass hut fall on them.