Guardians aren't real, they are just a Ghost play things... Right? The only time we see a dead Guardian is when the Ghost is dead. We are even sent on a mission to find a dead Ghost but no word on it's Guardian. We can die over and over again but keep coming back. Our Ghost never dies, its a parasite who uses us as a host to bring it places and distract the fallen/vex/cabal from shooting it. If our Ghost were to get destroyed, we'd be a Guardian no more. We are nothing but mere puppets, play things for these dispicable Ghosts.