Confirmed by science: our species is doomed.

[Silent3]

70. Humans only need technology and "food distribution systems" to live in large numbers...

...with food production kept as a specialty occupation, rather than being an essential part of most people's lives.

What would most likely happen in the event of a huge ecological catastrophe is that our population would be cut down to a few scattered millions, maybe even just hundreds of thousands. You might look at such huge losses and say we were "completely wiped out" compared to our current population, but a very tiny fraction of a percent of what had been the human race would still be more than enough to perpetuate the species, living by hunting, gathering, and subsistence farming.

We're adaptable enough to scrape by in small numbers even in a devastated world. "Extinct" means extinct -- not one of us left, and that's hard to do. Even "nearly extinct" is a tough standard, not a matter of mere relative population numbers, but a matter of numbers being so small that genetic diversity is threatened and breeding opportunities become rare.