Although religions, especially the Abrahamic religions, strongly contend that people should be fruitful and multiply, no one is obligated to have children. People should have children because they want to and are enlightened enough to guide, encourage, and nurture them to be highly conscientious adults. People should furthermore assess the aspects of parenthood before they have children.
Too many people have children, later regretting such a decision. Having children involve a lot of responsibility and sacrifice. It is not a decision to enter into blindly and mindlessly. There was a poll done by Anne Landers in the 1970s in which over 50% of the respondents indicated that if they had to do it over, they WOULDN'T have children at all. Most people have children because they feel obligated to do so by their friends, parents, religious teachings, and/or society. Our pro-natalist culture and society strongly inculcate people that to have children is the ultimate sign of adulthood. Our pro-natalist culture and society insist that those who elect to remain childfree are immature at best and abhorrently selfish at worst.
As a result of this incessant need to reproduce, many people are merely perfunctory and reluctant parents. They really don't enjoy their children, seeing them as noisome nuisances at best and intolerable burdens at worst. There are parents who can't wait for their children to go to school, a summer camp, or OUT because they find their children to be totally unnerving. It's as if they want to get their children out of their hair so to speak. Their children know this.
To reiterate, no one is morally obligated to reproduce. To perfunctorily reproduce is an act of selfishness, irresponsibility, and thoughtlessness. All children should be wanted, not just merely tolerated. If people thought before they become parents, there would be more people deciding not to have children and the children born are born to parents who really desire and love them.