Some inluence yes, if the couple have agreed and want a child together.The father has some influence upon the life of a child, surely.
He's expected to be there throughout her pregnancy, at the birth, participate in caring for the child...you know how much work that is, right? How does he not have a say in whether or not the woman gets an abortion on a child he may wish to live?
No - to the second point.
It's not his body or his choice - third point.