procreation

Fr: Catechism of the Catholic Church [CCC] (1994). "The gift of a child."

Re: Concept of the child
#2373 "Sacred Scripture and the Church's traditional practice see in large families a sign of God's belssing and the parents' generosity. (Cf. Gaudium et spes 50, par 2.)"

#2378 "A child is not something owed to one, but is a gift. The 'supreme gift of marriage' is a human person. A child may not be considered a peice of property, an idea to which an alleged 'right to a child' would lead. In this area, only the child possesses genuine rights:
- the right 'to be the fruit of the specific act of the conjugal love of his parents,' and
- 'the right to be respected as a person from the moment of his conception.' (Congregation of the Doctrine of the Faith, Donoum vitae II, 8.)

Re: in vitro fertilization
#2376 "Techniques that entail the dissociation of husband and wife, by the intrusion of a person other than the couple (donation of sperm or ovum, surrogate uterus), are gravely immoral.
These techniques (heterologous artificial insemination and fertilization) infringes
[a] the child's right to be born of a father and mother known to him and boudn to each other by marriage..
[b] They betray the spouses' 'right to become a father and a mother only through each other' (Congregation of the Doctrine of the Faith, Donum vitae II, 1.)

#2377 "Techniques involving only the married couple (homologous artificial inseminatoin and fertilization) are perhaps less reprehensible, yet remain MORALLY UNACCEPTABLE...."