Well, it could be said that Coronavirus is the biggest lesson for those of us who have not lived through a war. Also most of the effects you mention:
... crumbled markets, economy, businesses, lives, and so on.
are the consequence of political decisions, not of the disease itself. In theory they were taken to avoid greater evils, although I believe that it could have been done differently.
The level of poverty and suffering after the coronavirus has never been seen.
You mean you haven't seen that level of poverty and suffering in your life, but going back to what I was saying before, in historical terms it's nothing. Look at what happened in Europe during WWII and compare.