Here is where I think there is a categorical error in thought. The procreation impulse clearly goes back far before humanity, or even great apes. Procreation is a basic element of life writ large. To speak about procreation in this way, I think, misunderstands the impulse. Not only that, but I think that the parent-child love relationship gets overblown in a way similar to your critique of the sex-love relationship. Tons of people don’t love their children, and never have that love-bond.