Anyone who gets along fairly well does not need so many children to work with.
It should be added that it is often argued that "they need so many children" to be cared for in old age. My observation in several African families, however, was rather that few educated children ensured better care in old age than a lot of children living in slums.
Who can help others if he lives in the dirt himself? The social protection of parents by many children is a fairy tale.