In Mormonism, It is both a gift and a blessing to have the chance to raise a child to maturity. The Church of Jesus Christ of Latter-day Saints asks married couples who have children to raise them, teach them, and nurture them. Gordon B. Hinkley wrote the Proclamation to the World. In it, it says, "Parents have a sacred duty to rear their children in love and righteousness, to provide for their physical and spiritual needs, and to teach them to love and serve one another, observe the commandments of God, and be law-abiding citizens wherever they live."
Parenting isn't easy. They have to raise children, from newborn babies to adulthood. They have to change diapers, bath them, feed them, clothe them, tell them to clean their rooms, give them money for dates, etc. Parenting is tough work, but if both spouses work hard, they will be successful and see the fruit of their labours. If they did their duty in raising their children right, they will be blessed forever.
In this day and age however, many people see parenting as abnormal, and ridicule large families. They don't want to work hard to raise children. They don't want to be burdened with the responsibilities of raising children. Instead, they either want to be married and not have kids, and do the stuff they want to do, or they want to be single and to enjoy life.
The Church leaders asks young couples to be worthy and ready to raise children and to be good parents. They ask them not to raise them in the ways of the world, but to raise them in the ways of the gospel.
For young couples to raise children, it is very difficult; most couples still need to finish college, most don't have a lot of money, and most couples don't live in a house that is paid off completely. There are many blessings though that come with raising children. Sometimes, it comes through extra money that couples receive, many times, it comes through service and charity from other members and non-members. Sometimes, the child they are raising can be more "behaved," (not staying up all night, cry very little, etc.) than others.
Having a child in the home can bless you with a stronger spirit in the home. It can help you in troubles and in tough situations (medically, financially) but in the long run, many families say it is worth having a child in the home for these blessings.