Why do I not feel fear about my impending death?

According to Osho, your lack of fear is natural, not exceptional: nature shields life by keeping death psychologically ‘for others,’ so overwhelming dread doesn’t paralyze living. We live by an unconscious sense of open-endedness, and even your “certainty” of dying is only an inference, not direct experience. Hence fear seldom arises until the moment itself—life remains possible.