Every living thing, animal or human, or tree experiences...

Every living thing, animal or human, or tree experiences that which is called death, with no exception. You've all accepted that one a long time ago. Spirit, which is who we really are, or Source, is eternal. So what death must be is a changing of the perspective of that Eternal Spirit. If I am standing in my physical body and am consciously connected to that Eternal Spirit, then I'm Eternal in nature and I need not ever again fear any endedness, because, from that perspective I understand that there is not any of that.