Vacco v. Quill
Finally, the Court said that the state of New York had "a legitimate interest" (good, valid reasons) in banning physician-assisted suicide.  They said the ban would help the state prevent euthanasia, protect doctors' medical ethics, and protect terminally ill people who might feel pressured to end their lives.  Most importantly, they said, New York's ban helped protect human life.  The right to life (however long it may last) is an "unalienable right" (a natural right) guaranteed by the Constitution.  The right to death, the Court said, is not.