Why are old people not afraid of death? The more detailed, the better.

They have experienced a lot, such as watching their comrades die in the war, because they have been divorced and married for half a century without their wives to take care of them all their lives. Who knows, the only child died for various reasons, and the white-haired people sent the black-haired people the pain? Who knows that these pains are unforgettable, so they are not afraid of death. I hope all parents in China will live a long life and be healthy.