Not all of them, clearly. If you avoid doing things due to a fear of dieing, you will never live. Being alive is not the same as living. Someone is a coma is alive, but they arent living. Living in fear is a half life. By your logic, we should never drive anywhere, because of the number of people who die in car accidents. We should not have skyscrapers, or power lines, or bridges, because the construction and maintainace of them is really dangerous and people could die.