@hightor,
Quote:The world’s insects are hurtling down the path to extinction, threatening a “catastrophic collapse of nature’s ecosystems”, according to the first global scientific review.
Thee may be as many as forty or fifty insect species, particularly honey-bees, which anybody could make a rational case for wanting to keep around. Many if not most of the rest are basically creatures of Pandoras box, serving no purpose other than to harm more advanced creatures, including humans.
Other than for that, the great dieouts of past ages had cosmic causes which are no longer in evidence. Our system is totally stable now and those kinds of events will not recur. If you like to worry about large scale **** that you don't have much control over, I'd suggest the following items:
Our planet' megnetosphere
Genetic entropy
The Yellowstone situation
and the American diet. Yellowstone could destroy the United States; the American diet could destroy the world.