IN relationships or the living I don't understand the concept. Someone that has died, that last conversation or the last time you see them before they close that casket is the image and the voice you will remember most forever. I think if someone has to go to a morgue and try to identify a decapitated body then they have a closed casket, they feel there wasn't enough time with that person at the end! I understand your point , it is a made up concept, but the mind is very complex from one person to another!