It all essentially boils down to a lack of God and, by extension, a lack of morality, and it’s getting exponentially worse with each generation.
I believe that is why we are doomed as a species. We don’t need asteroids, or volcanoes, or disease, or space aliens, or anything of the sort.
We carry the seeds of our destruction in our souls, or lack thereof.
I figure that after so much decline, the most fit humans will walk out alive. There are some people like myself who know about wilderness living, and could do so if technology collapsed. Same with fertility and food. I have long suspected that trying to get some of my own hunted meat and grown vegetables and fruit may actually make a difference in my health. I suspect part of the diabetes/obesity problem may be food additives. Either way, I could leave a long rant, but you probably get the idea, the tougher, more fit individuals will rise up from being the subset to the dominant population, while those who can’t do without the modern tech will sadly bite it. Hopefully Jesus can step in and help at some point.