Suicide is a fundamental human right. This does not mean that it is morally desirable. It only means that society does not have the moral right to interfere. ~Thomas Szasz
Now, physician assisted suicide is another kettle of fish. If a shriveled old soul sans social utility is just sitting around suffering and sucking up air, then surely a society should interfere. More specifically, a Hemlock Society.
[The prosecutor] calls it a crime, a murder, a killing... this could never be a crime in any society which deems itself enlightened... I call it a medical service. You came to me and said, 'Please help me.' The aim was a final solution to incurable agony. ~ Dr. Jack Kevorkian