I've always wondered why, with the advent of Roe v. Wade, no one went after this practice on the Constitutional grounding of the "equal protection" clause.
It seems to me, inherently unjust for the woman to have "reproductive choice" from the time she finds out she's pregnant until the actual birth, yet men are stridently commanded (particularly by women) to make that choice before she's even pregnant.
Making the man responsible is one of the reasons for state sponsored marriage.
Without a marriage license, the man should have no say over and no obligation to any child that reasults.
Or let's do away with state sponsored marriage and use DNA testing instead.