Can someone explain this to me?

there is this song with the lyrics... " let's dance the night away like we are gonna die young". I was having this conversation with somebody and I told him that I don't believe in the song because I will not die young, that I don't want to die without living out my life purpose. He went ahead to say that if one dies young they have a beautiful corpse and I was utterly shocked because I was wondering why would you want that. I do not think the grave appreciates your beauty. Live out your life such that when you die, you did all that you were meant to do and that no treasure is buried. If you are to make a difference, why not do it when you are alive??????