Is Surrogate Motherhood Sinful?

While the pain of sterility is undoubtedly significant for some married couples, adoption is the moral way to rectify the desire to have a child. Surrogate motherhood, though perhaps well-intended, is gravely wrong:

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) infringe the child’s right to be born of a father and mother known to him and bound to each other by marriage. They betray the spouses’ “right to become a father and a mother only through each other” (CCC 2376; cf. CCC 2377-79).