"Why would you bring a new child to a world that made you suffer and would make the baby too?"
I remember a philosopher once said that nothing can exist without its opposite, without suffering there will be no joy.
Still for people who don't believe in God, such philosophical questions tend to feel depressing.
A lot of atheists ask "if God exists, why does he allow the suffering of children?", if you believe in the afterlife you'll know the answer is simple, suffering is a form of atonement and our time here is brief and only a test for what comes after (also children who die go to heaven), so in a way suffering is not a bad thing when you look at the bigger picture.