Death is what we call it when an individual's biological functions cease. Without biological functions to generate consciousness, that individual effectively ceases to exist as a living being. All that is left is the inert physical body that used to generate that individual's consciousness... and that only temporarily, as it will soon return to the earth. That individual metaphorically lives on after death in the memories of those that knew him, which means that how that individual lived his life does, in fact, make a difference (to everyone save the deceased). How one lived effects how positively or negatively one is remembered and for how long.
If someone wishes to be remembered in a specific way by his friends and loved ones after he dies, then it behooves him to live that way while he is alive. For most, that is enough incentive to be a decent person. No need to bring anything mystical into it.
If someone wishes to be remembered in a specific way by his friends and loved ones after he dies, then it behooves him to live that way while he is alive. For most, that is enough incentive to be a decent person. No need to bring anything mystical into it.