We've learned that we are woefully under-prepared for pandemics. This is something we can only learn through grim experience.
In recent years, we've experienced a breakdown in consensus reality. Our intersubjective reality--the reality that we, as social creatures, directly live in--has fragmented into competing factions that cannot not agree, even on basic facts.
A deep structural problem in American society is that wealth and political power are concentrated among boomers, and a generation has a "f u, got mine" mindset, protecting their privilege rather than investing in a healthy society.
Shocks are necessary for healthy, adaptive, and antifragile systems. We've become good--too good--at maintaining our comfort. That comfort breeds complacency and passivity, and fragility.