Things without mass can only exist if there is something with mass to support it. Sound can only exist if there are sound waves to carry it. A spoken word can only exist if there are sound waves to transport it. Sound can only be created by the vibration of matter. No matter to vibrate and no ound waves then no sound. A written word can only exist if ink and parchment/tablets etc. are used to record it. If neither specific sound waves exist to transport the word and no ink and parchment etc. exist to record it then the word no longer exists. Electricity can only exist with wires and plasma to transport it. Electricity can only be created by atoms losing electrons. No atoms losing electrons and no wires etc. then no electricity. Software can only exist if there is hardware to store it and allow it to work. Software can only be created by computer writers. No computer writer writing it and no hardware then no software. Actions can only exist if there are living muscles to contract and bones to manipulate. Actions can only be created by the electric impulses of ions in the foot of the nerve. No nerves and no living muscles/bones then no actions. Thoughts can only exist if there are ions in the brain cells to transport them and living brain cells to push the ions. No living brain cells to push ions and no localized ions to the brain cells means no thoughts. A person is defined by their actions and decisions. After death actions can no longer happen due to dead muscles and nerves. After death thoughts can no longer happen due to dead brain cells and leaking ions. After death a person no longer exists. Why fear something that doesn't exist?

They don't come back.

Because they have become angels.

Jehovah's word has the perfect answer for that at Ecclesiastes 9:5 which reads (first part); For the living are conscious that they will die; but as for the dead, they are conscious of nothing at all, and Psalms 146:4 say's; His spirit goes out, he goes back to his ground; in that day his thoughts do perish. So basically the dead are nonexistant, therefore there is nothing to be afraid of.

If they didnot hurt you in life why would they harm you in death. It is only your fear that can hurt you.

Because they're dead. o if you believe in life afterdeath, the question becomes "why is there no reason to fear a spririt/ghost/soul/apparation?"

Because they are dead and their bodies are either burned or buried. It's the living that you should fear.

Because they chase you really slowly as they have bits hanging off, and you can easily dodge them..

They patiently await your arrival. Unlike the living who may wish you a speedy departure.

Choose your translation, they all say the same thing; Ecclesiastes 9:5 (New International Version) New International Version (NIV) Copyright © 1973, 1978, 1984 by International Bible Society 5) For the living know that they will die, but the dead know nothing; they have no further reward, and even the memory of them is forgotten. OR Ecclesiastes 9:5 (King James Version) King James Version (KJV) Public Domain 5) For the living know that they shall die: but the dead know not any thing, neither have they any more a reward; for the memory of them is forgotten. OR Ecclesiastes 9:5 (New Living Translation) New Living Translation (NLT) Holy Bible. New Living Translation copyright © 1996, 2004 by Tyndale Charitable Trust. Used by permission of Tyndale House Publishers. 5) The living at least know they will die, but the dead know nothing. They have no further reward, nor are they remembered. SOURCE: http://www.biblegateway.com/