I hit the recommend button because I think what you’ve said in this article is worth thinking about. But … your extrapolations are more or less built on the goodness in humanity. We also have this more troubling part of ourselves that is also human … the Darth Vader/Cruella Deville side. I’m not so sure about which side will prevail.
There are a lot of equally reasoned conclusions by authors on Medium suggesting those who survive will have adapted to radiation, poisoning, and treachery; and that they’ll be living in the nature-encrusted confines of abandoned malls and old Olympic venues.
Although I prefer some version of the outlook you’ve portrayed here, time will tell.