Mom wanted to know we'd been good in school and kind to others. Dad wanted to know what he hoped for the future. Children need these varied experiences. They form a firm foundation to help them mature into adults. Being part of a family is important to future generations as well.
Statistics show that children of divorce often marry and divorce themselves.
Yes, there are ups and downs in all marriages because we are human and make mistakes. He will have a model of a working marriage. The truth is sometimes isn't happy like when there are deaths in the family, when bills mount,when sickness strikes, and when there are disagreements. But that is also part of the growing process as we learn to live with and accept life and all its variables. As a wise man once said, accept what you can't change, change what can be changed.