[I finally decided to use the "f word" for emphasis, since nothing else seems to work.]
You couldn't write a science fiction scenario weirder than our reality. Here's an outline for a screenplay:
The Stupid-Ass Dominant Species of Earth
By D.L.
A humanoid species spreads like wildfire across the surface of a planet- Earth - moving into every corner, proclaiming its supremacy and intelligence, evidenced by increasingly complex technology. But the technological breakthroughs disrupt existing ecosystems without thought to connected systems, bringing death or worse to many life forms including humanoids, while making giant fortunes for a few. The arrogance and narcissism of this species leads it to pursue technology even after inventing mechanical thought (MT) that surpasses its own abilities, threatening to control and replace it. The same has happened with biological science, which has given the species the ability to remake its physical self, bringing the possibility of an MT designed post-human.
The species goes through a recurring phase in its evolution called "war," in which the unused potential of developing technology is realized in a haze of emotion, sexuality and violence. At the time of the story, the species is nearing a war phase, the third in an increasingly extensive series, this time reflecting not only struggles over national and ethnic borders, but over what types of mentalities the humanoids will have, what types of bodies, perhaps what types of souls.
Opening Scene: On the bridge of the Starship Enterprise, which has traveled to the past to orbit ancient Earth, focus on Captain James T. Kirk, whose ancestors left Earth shortly before their species made it uninhabitable, and First Science Officer Spock, a human/Vulcan hybrid, intellectual and stoic [the Vulcans were originally emotional and violent, on track to destroying themselves and their planet- as Earth's humanoids did- but they took control of themselves, embraced logic and suppression of emotion and avoided self-destruction- hint, hint!]. Kirk and Spock have time-travelled to Earth's critical moment to learn more about what went wrong).
Spock (peering into a small box): The species is organized into "countries" - overly large collections of individuals. The countries lack cultural/psychological coherence -having quite rapidly replaced 300,000 years of tribal existence- so they routinely use hostility with other countries as a unifying tool. As their technology becomes more invasive and controlling, wars, which are promoted to mask the never ending technological change by presenting it as defensive, have become bigger and more intense, and are now termed "World Wars." There have been two of these, ushering in an age where machines are everywhere, making never ending noise, killing thousands through malfunction, yet offering "convenience" to the extent that no one can resist their development.