If most of society dies in pain and hunger to climate change, would the survivors say "bah, just more fear mongering"?
For me, humanity is the sum of human experiences, not the mere presence of the species. The end of the world being relative and analog.
The world did not end for the other billion on Earth living at the same time. You can't just throw figures like that without putting them in perspective.
>The vast majority of hungry people live in developing regions, which saw a 42 percent reduction in the prevalence of undernourished people between 1990–92 and 2012–14.
http://www.worldhunger.org/2015-world-hunger-and-poverty-fac...
Most of it is because of conflicts. Poverty is decreasing fast across the globe and there were relatively a lot more people dying from hunger in the 80s.