I don’t want to know the date and time of my exact death because then you would not live life effectively meaning you will do things you normally wouldn't do because you can predict things. It takes the fun and excitement out of not knowing and living life in such a way that it has meaning. I think knowing the exact date and time of your death may also change what you would have done if you had not known. It's not good to know the future because it alters how we think, feel, and relate to people. would you fall in love if you know you only had a couple of weeks? Would you pursue your dream if you knew it would be over before you started. Would you get close to people if you knew that it would end abruptly. Sometimes it is good to know things but sometimes its good to leave things a mystery.