As Martin Luther once put it -- in his typically reserved, shy, and timid way of speaking -- "People who do not like children are swine, dunces, and blockheads, not worthy to be called men and women, because they despise the blessing of God, the Creator and Author of marriage."
C.S. Lewis (who, ironically, wrote some of the most wonderful children's literature ever printed) confessed his own flaws in this respect. He once wrote of himself: "I theoretically hold that one ought to like children, but am shy with them in practice." In another place he wrote: "I myself do not enjoy the society of small children:... I recognize this as a defect in myself."
But by faith Christians say with Paul that our children are "holy" (1 Corinthians 7.14), and we lift them up in our hands before the Lord and give him deepest thanks.
"And as for me, this is my covenant with them," says the Lord: "My Spirit that is upon you, and my words that I have put in your mouth, shall not depart out of your mouth, or out of the mouth of your offspring, or out of the mouth of your children's offspring," says the Lord, "from this time forth and forevermore."
-- Isaiah 59.21