We don't measure the quality of our other relationships by how well the other person turns out, for instance whether my husband is a better person after 10 years than he was when I first met him.
People talked about being a parent, or being a mother or a father. We don't talk about "wiving" our husbands or "friending" our friends, or "childing" our parents. We just talk about being in a relationship with those people. You don't measure whether your marriage was good based on whether or not your husband is better now than he was 10 years ago, or whether your friend is richer than when they first became your friend. The relationships between parents and children is a kind of love, rather than a kind of work.
We don't wife our husbands and we don't child our parents.
