Death is often feared because it is considered as the end of life. However, when you try to analyze death in the light of different religious scriptures, you will find that most religions believe in eternal life.
Christianity, for instance believes in the continued existence of the soul that is ideally meant to reach Heaven and they eternal life there in the presence of God. Islam, too, believes in this sort of afterlife of the soul in Paradise or Hell after the Day of Judgment.