How dare the government stay out of our personal lives.
Agreed completely. As long as the action contemplated has the consent of all concerned, the government SHOULD stay out.
Naturally, the baby's consent should be gotten before the mother off's him or her (involuntary euthanasia is illegal...unless you are in the Netherlands or Florida). Of course, that consent really can't be effectively gotten for approximately 18 years and 9 months. So in the meantime, I think there is somebody who CAN'T speak for him/herself who needs protecting.