Some countries in Europe are paying people to have more children, presuming that those will be of the government's preferred race.

It is good to give more support to parents — that can reduce their stress, which is likely to hurt their children. Not having having a superfluity of resources to care for children leads to parents that are under great stress and can't do it well. And that often leads to lasting problems for the children.

But if parents use that support to have additional children, that will put them back into difficult lives and cancel out the benefit.