Death is something that happens to other people.
Just something to ponder -- it is, after all, the innate nature of the living to be unable to grasp the idea of Ending Someday. The idea that any one of those random horrible things that happen to "other people" could just as easily happen to you. The idea that if you were to die in your sleep, you wouldn't know as you closed your eyes that night. Your very last thought could be of what to put on your bagel tomorrow morning...or you could suddenly go out on a scream through a throatful of blood as your own intestines slither hot and wet through your fingers.
Not you, right? That won't happen to you. That kind of thing only happens to other people. You can't help subconsciously assuming that you'll get to gripe about old age; that'll you die of cancer, perhaps. Or a heart attack, after several warning attacks so you'll know to get your affairs in order. You can't help feeling that you'll have time to finish your plans and say your goodbyes before you check out.
Death, however, does not work around your schedule.
Think about how many, many ways there are to die. Think hard. One of them will happen to you someday.
Place your bet.