the usage of death as an example

I have  problem with the usage of death as an example or try to explain an animate object, example: "he looks dead inside".... what does that mean human understanding of death is impossible because no one has actually died and been resurrected.. so this very dilemma is causing ignorance of knowing the state of human death at all. so instead of death i would use another adjective like "still" it emphasis and put visual imagery onto the very thing ur describing and it's logical, it's possible to stop but death i'm pretty sure no human can really comprehend the truth in death, it's exceeds our understanding of this world. no one really knows the true meaning of death maybe in a biological sense but in a spiritual sense i doubt it becuase we have never experinced and when someone does they can't just pop out of coffin like hudini  and say shazam so this is the end of this rant. BYE even though im pretty sure no one is going to read lol