Seeking immortality

Recently one of the executives of a tech company said that with technology, human beings are going to achieve immortality. And as usual it got me thinking, why is that human beings have always wanted to achieve immortality but could never be able to achieve one. Consider this since the beginning of time, human have tried to achieve the secret of immortality and you can read countless stories about how the humans have failed to achieve anything even closer to immortality. In the modern times, many movies and art culture have their share of vampires and werewolves and even zombies where they have depict immortality for thousands of years but have to succumb to death at some point in time. There have been many people in the past and now in the present who arrogantly believed that they can achieve eternal life but have failed miserably. But the quest continuous with absurd claims that in the future, human would live forever and I take that as a grain of salt. How would today's scientist claim that in the future we would live forever when they would not be around to see this claim fail or succeed. And if all the great Prophets have their resting place and they passed away, how can us ordinary folk intend survive forever. We cannot fight the natural process of dying and leaving this earth as the day we are born, we are closer to death. So stop making impossible claim which one will never see the light of day.