Sometimes that committed long term relationship involves two sisters, two friends, a grandparent, no birth parents. It also extends beyond the family to include the municipality's social and material infrastructure - school quality, libraries, sports facilities, exemplary adults and after-school activities. The configurations are endless, and super obvious but sense always lags behind tradition in these tendentious surveys.
Divorce can be very very good, even healing for all parties concerned. Significant for children's welfare is the question of whether they end up cared for in a stable and encouraging environment.