Divorce And Annulment
"Whoever divorces his wife and marries another, commits adultery against her; and if she divorces her husband and marries another, she commits adultery."
This is repeated in St. Luke chapter 16, St. Matthew chapter 5 and 19. The Church of Christ, which has infallibly taught this teaching throughout the ages, has always firmly insisted that divorce is forbidden in the case of a consummated marriage of two Christians.
The evils of divorce!
Divorce is a great evil. The breakup of a marriage is a violent wrench which hurts the minds and the whole outlook upon life of the spouses. Both of them, but particularly the woman, need the guarantee of a permanent partnership. The children above all suffer great harm if there is a rift between parents and a breakup of the home.
Divorce attacks the foundation of both family and State, for the State is made up of families and needs stability of family life to produce good citizens. The fact that it is possible to divorce encourages husbands and wives to persist in quarrels, to refuse to put up with each others failings, because they know there is a way out. So now divorce has spread like wild-fire and is the cause of so much pain and suffering, especially to children.
Decree of nullity.
The Church sometimes declares marriages of two Christians to have been null and void because there was something wrong with the contract from the beginning. This is not divorce, since the partners were not truly married, it is a decree of nullity. For example, perhaps one of them was already married, or the partners did not enter into the contract in accordance with the laws of the Church or State. A decree of nullity is declared by the official court of the Church, which means that the sacrament never took place, even though outwardly it seemed to be a proper marriage.
Christ made the contract of marriage a sacrament. Baptized Christians who make the contract receive special grace, which unites them, making of their married life and love a means of growing in holiness. It gives them the right to all the strength needed to keep their promises and do their duty. It is available to them throughout their married life and helps them in all their difficulties, if they co-operate with it.
The marriage union between husband and wife is compared to the union between Christ and His Church. This is a reference to the fifth chapter of the letter to the Ephesians. There St. Paul says that husbands should loves their wives as Christ loved His Church, and died for it. He implies that Christian husbands should be prepared even to die for their wives. Wives should love their husbands as the Church loves Christ. The Church is united to Christ because she lives the same life as Christ, the life of the Holy Spirit. The Christian man and woman are united in marriage by that same life. In other words, marriage is a Sacrament.
Source: The Catholic religion
Having a family involves pain and sacrifice. But these do not have to cause unhappiness. It is selfishness which causes unhappiness. Where the "I" and "Me" flourish in the home, will sooner or later destroy the family. God will demand an account from parents of how they have brought up their children. Our Blessed Lord who spoke with great tenderness on many occasions, nevertheless spoke severely of those who harmed little children. He said it would be better for such to have a millstone tied round their necks and be cast into the depths of the sea.
Having children is an awesome responsibility. They are gifts from God and not owned by the parents to be used as a commodity. Also God expects parents to do everything in their power to put them on the path which leads back to Him. The best way possible is to pray together, at Mass and in the home. As Father Peyton tells us: "The family that prays together stays together," even in Eternity!