Jonathan Brooks8 said:That instinct is baked directly into the species itself. An individual might not make it through, but the species survives—it has to—through reproduction. However, if we didn't have that primal drive for survival embedded within the individual, the very act of reproducing—and by extension, the continued existence of the entire species—would be fundamentally compromised...
I think you can look at it from this angle, too:
The reproductive drive became so intense that the population surged right up to the absolute breaking point of the sustainable limits of Earth.
Even though that same species used that momentum to become more technologically advanced—which, predictably, just fueled more population growth—that progress still wasn't enough to allow us to colonize other planets or tap into their resources. Instead, we ended up spiraling into countless exhausting, cataclysmic wars, ultimately leading to the species going extinct on this planet.
In the end, the reproductive instinct actually backfired, causing the very extinction of the species it was meant to preserve by becoming too overwhelming.