In addition to a greater need for income and domestic responsibilities, the arrival of children may create in you the need for your spouse to become active in the moral and educational development of the children. I call that need family commitment. As is true for the need for financial and domestic support, if you do not have any children just yet, you may not sense this need. But upon their arrival, a change may take place that you didn't anticipate. Evidence of this need is a craving for your spouse's involvement in the training of your children.
Child care falls under the category of domestic support.
Family commitment, on the other hand, is taking a responsibility for how the children will turn out, teaching them the values of cooperation and care for each other. It is spending quality time with your children to help insure happiness and success for them as adults. But the need for family commitment is not met by just any form of training. It is only met when the training is enthusiastically approved by you. It can all be ruined if your spouse uses training methods and objectives that violate your standards.