Taken to its logical conclusion, I see no reason why that would not lead to a society where murdering kids up to a certain age is the expected norm when the family falls on hard times. If there is a god, I would hope he/she/it would go all Sodom and Gomorrah on it.

When we make public policies, we need to start from a baseline assumption that human sexuality exists and sometimes babies happen and those policies need to respect the privacy of the couple whose coupling created that child and their right to make a hard and complicated decision balancing multiple different interests. Sweeping policies of "just don't have kids" go horrendous places, including forced abortions of late stage pregnancies which are essentially murder because the baby is developed enough it would be viable outside the womb if the mother went into labor.