The idea of bringing someone to existence without consent is ridiculous when the beginning of the process usually occurs trough regular intercourse and consequent fertilization/conception, etc - Minors, children, newborns, you name it - Are incapable of consent, so talking about consent related to people who can't consent is ridiculous.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you