This is reason why enough that you should live every day to your fullest.
Psionicist: What I am about to say my give you many sleepless nights, so you may no want to read my post.
My creed is this:
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Tomorrow holds no particular promise for you, nor anyone close to you. Though small, there is a chance that you will be killed in a plane crash, run over by an automobile, get shot or stabbed, lose your life in a building fire. You, nor anyone you know, are immortal, so you need to live each day with no regrets.
Have you told your loved ones today that you love 'em?
Have you done or made plans to do everything you wanted out of life?
Have you made sure to take time out of busy schedules to game, go on dates, spend time with your spouse, WHATEVER you want to do?
Gigantic asteroids hold no special fears for me, because I am more likely to die in a plane crash or a gunfight than be killed by a meteor. As Chaim Potok said: "The space of a man's life is nothing. It is what he DOES with that life that gives it meaning." This knowledge should apply whether you are Christian or Jew, Muslim or Buddist, Agnostic or Atheist.
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End of creed.