RE: I will spend all my property on myself if I can know the time of my own death.

Having to know the exact time one will die will make the person prioritise what is important, but no one knows when they will die. When we have the knowledge, we may tend to take less risk, and the hustle for survival will not be too serious, which may probably reduce the greed of people, since they will know how much they will need to keep for themselves.