NOT JUST HUMAN NATURE. You are not looking at a Big Enough Picture. All through Nature most species routinely generate more offspring than can be supported by Nature --and therefore most offspring Naturally die or get killed. A pair of oysters might have as many as 100 million offspring over several breeding seasons, but only 2 or 3 of them (as in "just plain ordinary two or three") are likely to survive to eventually have offspring themselves.
THEREFORE WHEN HUMANS ABORT OFFSPRING, that Choice can
very often be traced to a lack of resources for supporting offspring (not to mention that
that lack is often
caused by abortion opponents). The key difference is that humans simply have greater ability (than oysters or most other species) to understand Natural phenomena such as the huge normal death rate for the offspring of most species.
FACT:
Biologically, humans are not significantly more special than any other species. Humans are known to be susceptible to delusions of grandeur on that topic, but Facts are Facts --
it is not human BIOLOGY that makes humans special. Meanwhile, Evolution has largely focused on biological interactions between species (eating, for example, involves accessing edible things, usually other life-forms).
YOUR IGNORANCE GETS YOU NOWHERE. You cannot support that claim with the slightest bit of Objectively Verifiable Evidence. It is very Natural for life-forms to have offspring.
It is Human-Natural to understand consequences of actions! And, often, to make Choices regarding those consequences. If you build a house that gets struck by lightning and burns to the ground, do you rebuild it or do you build in a different place? We know that different storms yield lightnings that usually strike different places, so it is probably safe enough to rebuild the house in the original place. But what if a flood had destroyed the house, instead? We know that floods usually strike the same places, and so building in a different place would be the wiser choice.
WITH RESPECT TO OFFSPRING, humans know they cannot survive without lots of support. Plus, we know that the world is overpopulated with humans, such that
the more there are, the more difficult it is to obtain resources to support even-more humans. And we know that 2/3 of all human offspring Naturally die before birth.
AND we know that the species is in no danger of extinction from a too-small gene pool.
THEREFORE ABORTION IS A TOTALLY RATIONAL OPTION. I've challenged various abortion opponents to provide even one reason why an
average unborn human
must survive in this day-and-age, and so far not a single reason has yet been offered. Will you be the first? (You can ignore the 2/3 that Naturally die before birth, and focus on the roughly 150 million pregnancies every year that don't Naturally miscarry. Otherwise the "average" unborn human would be included in the 2/3 that Naturally die!)