It's an interesting one certainly. When it comes to sex, both the man and the woman have equal choice when it comes to using protection. (So, if you don't want a child be sure to use protection.) However when it comes to everything after that the man doesn't get much say. If a woman wants to abort/carry the child he has no legal say in the matter. I'm sure there are plenty of men who have either lost a child or had to pay for one they never wanted because of this. So on one hand this gives men more control and if it goes through then it will make everyone stop and think twice about not taking proper precautions. On the other hand there are probably plenty of deadbeats that would jump on it straight away. There would need to be some sort of system in place where a father registered his desire to turn down fatherhood long before birth and both parents would need to go through mediation of some sort to look at all the options. If he does eventually turn down fatherhood then he loses all other legal rights such as access etc.