with adoption the adopted baby is already there. This is creating a child witht he deliberate purpose of denying it a father.
In case of women who are not married they may be denying a father but deliberate? Many men have no sperm, that is the case with my husband and that is the reason we adopted. We might have had an AI child in 1963 but my husband has an adopted brother and sister so that was the natural way for us to go.
Adoptions are more open now, in the past you were told nothing about the birth parents, NOTHING.