From the Nebraska DHHS page:

All children deserve to grow up in a good home. When a child cannot be returned to his or her original family, adoption becomes the goal.

The goal of adoption is to provide a child with a family for the rest of their life. Adoption is the means of transferring to a child and parents all the legal rights that they would have if that child had been born to them.

The value of adoption is that it provides a child with the basic needs: legal status, social status, and a family of their own.