Every crime that could have been committed was prevented by someone never being born. That makes perfect sense.

Except mine makes ethical sense and yours doesn't.

If I die, then you must die as well, since hypothetically you'd probably kill far more people than me, especially if you outlived me, giving you more opportunity than myself. It's a logical fallacy known as circular reasoning, and fallacies are forms of illogic.

Your sense of logic is inherently illogical.

Why take the risk? That unborn child could end up killing tens of millions of people. Not worth the risk, wouldn't you agree?