Worst case would be healthcare systems collapsing, and a majority of essential workers falling ill, dying, or simply refusing to go work. It would possibly cause severe supply chain disruptions, which in its turn could result in local food shortages, civil unrest and so on. If such a situation would be allowed to spiral out of control, it could very well result in a systemic collapse, especially on a local or regional level. On a global level, it's less likely.
Systemic collapse does not mean societal collapse or the end of humanity, or even civilization. The collapse will be a horrible affair and it might take centuries to get back on track if things get real bad. Humanity would still be around, though, and we're not threatened as a species.
I'm glad you agree that covid-19 is not a threat to our species!
Why did you bring up systemic collapse? You made some pretty broad statements. Things like food shortages and civil unrest happen all the time, for lots of reasons. There's Syria, Somalia, the former Soviet Union, the Arab Spring, everywhere a war is fought, etc. It wouldn't be surprising for this pandemic (and/or lockdowns) to tip some country over the edge, somewhere. But maybe not. Hasn't happened yet.
I think it's curious that you had to throw a new worst-case scenario out there. I hear you saying "ok, the species will survive, but we could, worst case, collapse, horrible, for centuries". What are you thinking? Do you think something like that might happen in a developed country? Or in India? Wouldn't hospitals just triage patients, letting the old and sick die? Aren't most health care workers already vaccinated? Is it reasonable to think that a disease that has killed less than 0.175% of the population (USA, 1 in 570), mostly older and/or sicker, could possibly cause the collapse of important supplies or cause food shortages?
Do you ever wonder why some people seem to have a tendency to dwell on worst case scenarios, even ones that are pretty marginal? I assume that it's because we are emotional creatures, and fear is a powerful emotion. Probably good for the survival of the species :-)
It was a counter-point to the "existential threat" argument.
> Do you think something like that might happen in a developed country?
Do I beleive it could happen? Yes, but it's quite unlikely, and it requires a series of fuck-ups from a lot of people.
It's also more likely to happen in undeveloped countries:
> It wouldn't be surprising for this pandemic (and/or lockdowns) to tip some country over the edge, somewhere. But maybe not.
> Wouldn't hospitals just triage patients, letting the old and sick die?
I think you underestimate how pissed off people might get if the system they entrusted their relatives' care to suddenly decided to just let them manage on their own.
On a local level, things are messier - as you say, local governments fall every now and then and covid is just about as likely to trigger it as any other major issue.
I find it far more likely that it won't happen,though.
As for worst-case scenarios in general, I think it's simply a way for us to plan ahead. "Shit will happen. It might be rough. We'll manage because we though of it beforehand." And yes, it' probably good for the survival of the species. :D
Systemic collapse does not mean societal collapse or the end of humanity, or even civilization. The collapse will be a horrible affair and it might take centuries to get back on track if things get real bad. Humanity would still be around, though, and we're not threatened as a species.