If I had the option to know the date, time, and delivery of my death I would have to decline for a few reasons.

For starters, knowing about my death would make me extremely paranoid.  For example, we'll say that I was going to die in a car accident.  I would be extremely terrified of all cars, whether I was in one or not.  The same thing goes for just about any other object.  I would hate to live in that kind of fear.

Depression would also be a downside.  Knowing how long (or short) I have to live would be a major downer.  I would most likely become a hermit and hate the world, much like goth kids.  On the other hand, it could make me severely violent.  It would be sort of like, "if I can't live nobody can."  Taking this theory to an extreme, it's possible I would go on a murderous rampage.  Nobody wants this.  This is highly unlikely because I am a pretty laid back person.

There is only one good thing that could happen.  Knowing the date and time of my own death could give me enough time to tie up any loose ends.  Or, as people in life insurance commercials put it, "I would leave my family with and financial burden."  For a few minutes I considered the idea that knowing about my death would give me a chance to do something about it.  The only problem is that if I were to avoid the original death, a new one would generate without me knowing about it.

Overall, I would prefer not to be paranoid, avoid a killing rampage, and live life in ignorance.  As the famous saying goes, "ignorance is bliss."