Le Cracquere:
we gather that Catholic married couples must not only eschew contraception, but must have children if at all possible.
Unless there is grave reason to avoid pregnancy, an openness to children is a must for the marriage to be valid. Marriage is “by its nature ordered toward the good of the spouses and the procreation and education of offspring.” Marriage is a vocation to the familial life. That life includes husband, wife and children. Now, there is such thing as a Josephite marriage where the couple marries but never consumates their marriage in the marital embrace. The practice deals more for individuals who serve the Church in very radical ways, such as living as missionaries in 3rd world countries and rather than serving biological children, you serve the needs of God’s children all around you.
Today the tradition is not encouraged by the Church for there is typically little need to marry if you’re going to be celebate anyway. But I have heard of cases where a Josephite marriage was encouraged by two missionaries to avoid scandal. They were preaching fidelity in marriage and abstainence before marriage, but many of the people they were preaching to believed the couple to have a sexual relationship. So they were married to avoid scandal, and regardless that they weren’t having sexual relations, if the people they served thought they were, it wasn’t spiritually hurting them.
In fact, saying that I dislike children doesn’t really cover it: I’m trying to recall a single child that I’ve met over the last year and haven’t felt a strong urge to kick, and I’m drawing a blank.
Than perhaps God is calling you and your wife to stretch your hearts and to grow spiritually. Loving children is a challenge for you and thus a route of spiritual purification.
Remember that children aren’t a mere side effect of having sex, but God’s gift to you. Is it right to reject His gifts?
What God creates is good and in your marriage it has the oppertunity to teach you and your wife’s hearts to love in a way they do not yet know how. Just because your heart is too small or hardened to love children now does not mean that in having your own children that it cannot be softened.
Christ calls us to love radically. Remember, we have hard hearts that need to be softened and they are softened through the acts we do that choose to love not when it is convinent and fun, but with it is difficult and we receive no retribution for it. We are called to love as Christ love and His example of love is being nailed to a cross, naked and abandoned and tormented and yet praying for those who hurt you.
edit
I have to add that I do like children. In fact, I get along better with children than I do with adults. I have the ability to stop or at least distract a baby from their tears in a matter of minutes. I understand children. I do not understand most adults. At family reunions, I enjoy myself more by playing and watching over the little ones than standing around having a dull conversation with one of the adults. But I suppose that’s just what happens when you’re the oldest great grandchild, have three younger siblings and your mom ran an inhome daycare till you were 12.