Pregnancy does involve real physical risks and permanent bodily changes, and no one should be compelled to become pregnant against their will. Still, acknowledging those realities does not settle whether abortion is morally justified as a response to ordinary pregnancy risk. Treating abortion as justified whenever pregnancy carries any danger assumes that even minimal risk authorizes killing another human being, which stretches the idea of self-defense far beyond its accepted limits.
Self-defense is not understood as a license to kill whenever there is a nonzero chance of harm. The severity, probability, and immediacy of the threat all matter. Determining when a threat to life is serious enough to justify lethal force is difficult, but it is clear that the threshold cannot be vanishingly small. A pregnancy-related mortality risk of roughly 0.017% does not plausibly meet that standard. Accepting such a low bar would imply that almost any minor or speculative risk could justify killing someone else.
An analogy helps clarify the problem: killing a roommate to avoid catching the flu would not count as self-defense, even though the flu technically carries some risk of serious complications or death. The mere existence of risk is not enough. In the same way, using abortion to avoid the ordinary risks of pregnancy treats a low-probability, non-malicious threat as if it were a lethal attack, collapsing important moral distinctions about when killing is justified.
Key Takeaways
Ordinary pregnancy risks do not meet the moral standard for lethal self-defense against another human being.
A nonzero chance of harm is not sufficient to justify killing; probability and severity matter.
Setting the threshold at extremely low risk levels leads to morally absurd conclusions.
Protecting life requires distinguishing between genuine life-threatening emergencies and normal biological risks.