It is easy to say that you can adopt the whole human race as your children, but it is not the same as living in a home with a child and shaping all you do to help him learn to be happy and whole and good. Don't live your life without ever holding a child in your arms, on your lap, in your home, and feeling a child's arms around you and hearing his voice in your ear and seeing his smile, given to you because you put it into your heart.
Orson Scott Card (2008). “Ender in Exile”, p.403, Macmillan