 The technological interventions of modern medicine have had the effect of stretching out the time it takes for many people to die. Sometimes the added life this brings is an occasion for rejoicing; sometimes it drags out the period of significant physical and intellectual decline that a person undergoes with the result that life becomes no longer worth living. Many believe there is no single, objectively correct answer as to when, if at all, a person’s life becomes a burden and hence unwanted. If they are right, that simply points up the importance of individuals being able to decide autonomously for themselves whether their own lives retain sufficient quality and dignity to make life worth living. Others maintain that individuals can be in error about whether their lives continue to be worth living (cf., Foot 1977). The conditions outlined above in Section 2 are intended by those who propose them to serve, among other purposes, to safeguard against such error. But it is worth adding that in the event that a person who considers that she satisfies those conditions is judged by her medical attendants to be in error about whether it would be worth her continuing to live, the likely outcome is that those attendants will refuse to provide medical assistance with dying. (Evidence that will be mentioned below shows that this happens frequently in jurisdictions in which medically assisted dying has been legalized.) Unless a patient is able to be transferred to the care of other medical professionals who accept her assessment, she will have to rely on her own resources (e.g., by refusing nutrition and hydration). Even so, other things being equal, as long as a critically ill person is competent, her own judgement of whether continued life is a benefit to her ought to carry the greatest weight in any end-of-life decision making regardless of whether she is in a severely compromised and debilitated state. The idea that a competent individual’s autonomous judgment of the value to her of continued life should trump an assessment by others of her well-being should not be thought surprising because precisely the same happens when a competent patient refuses life-prolonging treatment.