Law is a crazy, bizarre, and sometimes wonderful thing. Not many seem to actually realize that law isn't a thing, with mass, that it doesn't exist externally from us. Law is an ideal, an idea, nothing more nothing less.
Nothing highlights the nature of law like laws against suicide. Is it against the law to commit suicide, one may ask? Well, any yokel can jump off a cliff. Like Andy said, so sue them.
We're all born and we all die. Sometimes checking out isn't so nice. Many countries have Dr. assisted suicide programs, humane laws designed to aid those in dire straights. In socially backwards America, one state has Dr. assisted suicide laws: Oregon. Recently, beacon of intelligence & reason, ex-attorney General John Ashcroft hatched a brilliant plan to thwart humanitarians in Oregon by charging that Dr.s in that state were illegally using drugs to assist the terminally ill die a humane, peaceful death. Today the US supreme court ruled against Ashcroft and said it's the states that get to decide, not the US dept. of justice. Interestingly, new supreme court appointee, John Roberts, dissented, saying Oregon doctors should be criminalized for helping terminally ill Oregonians.
Ironically, those in the medical profession have been helping folks check out with dignity since before written history. Now days, if you're in a state other than Oregon, they call it "the double effect." Since doctors (and nurses) are the ones that have to deal with these issues, if a person is in such dire straights they need, errr, medical assistance, doctors commonly prescribe enough pain medication to relieve the discomfort of certain terminal cases. Since the amount of morphine required to ease the sufferings of those so afflicted also results in death by (not so) accidental overdose, it's called the double effect: relieve pain and cause death simultaneously.
The only difference is that in Oregon it's out front and in the open; people get to make that choice for themselves. In every other state it's done behind closed doors and in clumsy secret.