We have three adult children, and we are quite proud of them. It is a pleasure to see how, each in their own way, they reflect the values which were a part of their upbringing.
It's a little bit like James 4:5, which says that God longs for his Spirit to dwell in his children. It's not just that God wants us to be saved and to be filled with his Spirit. It also brings him pleasure when our thinking reflects his Wisdom.