It seems like having your heart stop and saying it isn't a "real" emergency, because the organs are all still there and ready to get back to work as soon as oxygenated blood starts arriving again. Sure, that's true for a minute or so, maybe two if you're young and healthy. After that...
Staying within the increasingly strained analogy, I don't think it is reasonable to describe the US economy as "young" or "in perfect physical health", or indeed even as anywhere close to either of those. This is more like doing an emergency sextuple bypass on an obese 70-year-old with a lifelong pack-a-day habit - even if the patient comes off the table alive, it's going to take a long and careful period of physical therapy and recovery to keep him that way, and he's almost certainly never going to recover all of even the limited capacity he had before the crisis.
Right. Common belief in 1930-1931, too.
Psychology is malleable, and consumption patterns beyond food and shelter are driven largely by psychology. In the great depression, consumption behavior of an entire generation was permanently changed, no matter how much better the economy got. Those mental scars lasted forever.
What percentage of the population will watch a parent, spouse, best friend, or grandparent slowly asphyxiate to death and develop a lifetime aversion to casual dining, tourism, mall shopping, non-business air travel, fast food, staying in hotels, visiting family for holidays, casino gambling, meeting with potential clients, going to class, etc?
And then what are the second order effects of not needing the suits/ties/dresses, jetliner inventory, commercial real estate, gasoline, cruise ships, university buildings, casinos, etc required for the above activities?
Which of the economic sectors predicated on those activities will "bounce back"? What is the current high-yield debt load associated with these sectors?
People and societies are not as fragile as many people seem to imagine today. People and societies are, in fact, quite resilient. They can withstand the horrors of war, plague, famine and more. And then bounce back rapidly within a few years. I'm not trying to minimize the sorrow or severity of those that suffer from this pandemic. But relative to past mass trauma, there is little to suggest it's a major turning point in global culture.