How does Death react to survivors after he takes a life? Why does he react this way?

Death tries not to look at the survivors.

They’re the ones I can’t stand to look at, although on many occasions I still fail. I deliberately seek out the colors to keep my mind off them, but now and then, I witness the ones who are left behind, crumbling among the jigsaw puzzle of realization, despair, and surprise. They have punctured hearts. They have beaten lungs.