Except that during such scenarios, it's not necessarily the strong, the healthy, the smart and the good that survive and reproduce. Often it is the weak, the sick, the dumb and the evil.
Again, I will agree with such Exception, but must insist that I am attempting to express something that goes beyond the old tropes regarding the survival of the fittest farce.
I never subscribed to Darwin, and never accepted the doctrine of "natural selection" or "survival of the fittest" as the driving force of evolution. I hold the view that Evolution is guided by as of yet discovered morphogenetic energy fields, and bio-feed back systems, that work in accord with a higher intelligence to create and evolve within a synergistic and symbiotic universe, where eternal living electricity is the only true force.
Bare with the hyperbole, conjecture, and wistful thinking as I attempt to play the Devils advocate in challenging some basic presumptions!
The phenomenon of how human folly such as war and birth control, winnows out the "Fittest' is still an opinion and one that will never be entirely agreed upon. Perhaps the brave and strong is not what humanity needs to move forward, and so the whims of the great super natural order manifested the world wars, in order to cull those qualities out of the human race. The survivors of the wars, though not physically strong or very brave, never the less were the kind of people who were much more fitted to the next phase of human development, in which such large numbers of strong and Brave humans may have been a hindrance to the emergence of this technologically advanced Global hive collective.
Back to the bees, we can see the stingers and venom were developed as survival mechanisms in a genocidal world of warfare, on par with any atrocity of human war. They banded together against the cannibalistic attacks from other gangs and found strength in numbers....but in order to build their collective strength, each individual had to be willing to sacrifice themselves to the collective. Even after millions of years of this subjugation some renegade worker bees will still attempt to covertly lay their own eggs and illegally express their own sexuality, and those who are discovered are executed by the enforcers.
This isn't meant to suggest that humans will literally eventually evolve into hive insects, its only to illustrate the A-sexualizing tendencies, sexual morphology and breeding regulatory systems which are seen in many types of social hierarchical species animals. In this view, judgement of good and evil do not even begin to apply. How the DNA manages to transmit, reincarnate, and evolve is beyond moral judgment. All mammals evolved from hermaphroditic penis fencing rapist worms, so it should be no surprise that things would get even weirder from there.
Yet all weirdness and wondering aside, there is a push pull, give take, and mutual balanced interchange throughout the cosmos. The dynamic between individual and collective will forever be at Play. Survival of the fittest dogma will always be confounded by the survival of the symbiotic . Creation and evolution is a one in the same phenomenon, regardless of what side you take the great mystery will remain. The agnostic will continue to ask, how can anyone begin to say that the methods used to spark this divinity, could ever be known....