Look at it this way, there are three entities who have an interest in medical decisions relating to the child.
(...snip...)
However not all interests are equal.
Agreed, so far.
The state only had an interest where the parents are using undue influence to damage the health of the child (for instance parents refusing lifesaving surgery or blood transfusions because of the parents religious beliefs).
Fair enough.
Regarding the interests of the child and the parents, the balance between the two is not always the same, as a child grows older their right to medical autonomy grows, whilst the parents rights shrink, by the time you reach the point where contraceptives or abortion may become an issue, the child's rights are at least equal to the parents rights, in which case the child can invoke the sate to trump the interests of the parents, if the sate is not prepared to support the child in opposing the decisions of the parents taken for the child, then the parents rights will win out.
Emphasis mine. I don't think it's a question of child's rights
vs parents' rights. It's child's rights
vs parents'
responsibilities. Parents have a responsibility to do what is best for the child; when parents fail to do that is when the state is supposed to step in, and even then, only in extreme circumstances; the state doesn't step in when a parent unfairly punishes a child for misbehavior, or doesn't punish him at all. The state steps in when the punishment is dangerous or unreasonably painful. Similarly, the state doesn't step in if a parent doesn't take a child to the doctor at the first sniffle premonitory of a cold; it steps in when the parent refuses a life-saving blood transfusion.
Now, is an abortion in a child's best interests? I would say, often, yes. Am I the best judge of that? Not for my neighbor's kid, no. What if the parents are utterly supportive of the girl, and are willing to do everything necessary to help her raise her baby and make sure she is able to finish school and otherwise live a happy life, and that is what the girl wants? Clearly, abortion might not be in the girl's best interests in such a case.
Ah, but what if the girl
wants the abortion, and her parents are against it? Or
doesn't want the abortion, but her parents favor it? Why does the state (i.e., society) have such a compelling interest in this matter that it must intervene? Unless there's some compelling evidence that the parents' decision is not just detrimental to the child's best interest, but catastrophically so, why should the state get involved?
Once a child becomes an adult, parents' interests are completely irrelevant, and the state only has an interest in extreme circumstances (where the adult is not mentally able to make decisions for herself, or in the prevention and control of some nasty infections diseases)
Agreed.