OK here is a possible scenario:
Man wants child
Woman doesn't, wants an abortion simply as a form of birth control
Have woman act as a "surrogate" for lack of a better word
Man raises child by himself
Another:
Man doesn't want child
Woman does
Woman gives birth and raises child on her own
What if she doesn't want to be a surrogate? What if the man failed to use birth control and the woman gets pregnant? What are his responsibilities then?