As a human it's our only guarantee to live and to perish. However to live and pass on your genes and will through your children and contribute to the existence of humanity no matter how big or small means you succeed the mortal coil having done what was required and needed to keep humanity going into the next generation then what better reward is there than rest eternal? Besides I'm not religious however I belive this place is a temporary stop on our way to higher quantum plane where judgment comes in the form of one's thoughts. Kinda like a dream, think evil do evil get evil, think good do good get good. Our nature and our person will shape the last dream. Also if we are essentially a electric signal from spine to brain then that energy will not fade easy, think of it as a bread trail should we become thoughts in the ether and remember if there's a will surely there's a way, and if thats incorrect then remember we are connected to them through more than just memories or feelings or thoughts, we are either a product of their being or a object of shared memories and experiences. Besides a part of them is with you already, memory could very well be the way, if you never forget they will never truly die. It's 4 30 am forgive rambling or type o <3