Because life is so valuable, we are not permitted to do anything that may hasten death, not even to prevent suffering. Euthanasia, suicide and assisted suicide are strictly forbidden by Jewish law. The Talmud states that you may not even move a dying person's arms if that would shorten his life. However, where death is imminent and certain, and the patient is suffering, Jewish law does permit one to cease artificially prolonging life. Death In Judaism, death is not a tragedy, even when it occurs early in life or through unfortunate circumstances.
Death is a natural process.
Our deaths, like our lives, have meaning and are all part of G-d's plan. In addition, we have a firm belief in an afterlife, a world to come, where those who have lived a worthy life will be rewarded. Mourning practices in Judaism are extensive, but they are not an expression of fear or distaste for death. After a person dies, the eyes are closed, the body is laid on the floor and covered, and candles are lit next to the body. The body is never left alone until after burial, as a sign of respect.