I found this here.
At the heart of all religions is the movement from self to other, it is the basis of the "Great Commandment", it is what Jesus is about. It is also what marriage is about, it is at the heart of what the Church is saying when it teaches about marriage being open to the "gift" of children.
Here a child is seen as an accessory, a commodity, an object fufilling the desires of this couple. What will happen when the child no longer fits in with his parents desires?