Gale is torn. He knows the basics of reproduction. He knows that younger subjects, but not too young, are more fertile and that in nature reproducing quickly is a means to ensure the survival of your genes. But in this world it seems that people Kotoha's age are not done with their studies yet. In his worlds, if any teenager existed, they'd be sent to war like everyone else. Doesn't raising children takes a lot of time and energy? It seems incompatible in both cases.

"... I do not comprehend."