Response: God only ever refers to children as BLESSINGS. Never does he refer to His creations as a curse. Psalm 139:14 says, "I will give thanks to You, for I am fearfully and wonderfully made; Wonderful are Your works, And my soul knows it very well." and Genesis 1:27 says, "God created man in His own image, in the image of God He created him." We are wonderfully and fearfully created in the image of God. How could such a being be considered anything less than a blessing from God?
We see time and again that children are the most talked-about blessing in the Bible. For instance, in Deuteronomy 28:1-14, which are known as the prosperity verses, God provides an adequate list of what He names blessings: your possessions, your labors, your womb, victory over your enemies, your leadership. I believe that the overwhelming responsibility of training these blessings relies solely on us, as parents, which is a HUGE responsibility. However great that responsibility is, we humans have never been given the charge, nor do we have the ability to CORRECTLY foresee when to plan/prevent these blessings from God. Situations change. Incomes fluctuate - down and up! Let God provide for those He chooses to send you! Have faith and give over your womb to God for HIM to use as HE sees fit. Psalm 37:25 says, "I have been young and now I am old, Yet I have not seen the righteous forsaken Or his descendants begging bread." He will provide the necessities...maybe more, but never less than what you and your family needs to adequately provide for the lives He blesses you with! Children are not expensive, but lifestyles are. As long as you are managing your lives Biblically and appropriately, God will provide ALL you need!
The verse Jeremiah 17:9 says, "The heart is deceitful above all things and beyond cure. Who can understand it?" That clearly states that we are deceitful to the core and that our hearts cannot perceive the long-term effects that God sees when He sees fit to send us children. Who do you think knows what's best for you? Yourself...or the One who made you?