Could having children be unethical?

Having children is a fundamental part of the human experience, and it is almost universally seen as an unqualified good. We rarely consider or discuss whether it is ethical to have children at all. Surely, the decision to create a human life must have enormous moral weight, which is why it is strange that we seem to take its morality for granted. After all, there is no way to guarantee that a child born will have a good life, and we all come into this world with the capacity for profound suffering.

So, could having children be unethical? Are we warranted in questioning the ethics of having children?