Why does joe want this?

Joe wants more than anything to die, because he wants to end this state of almost-death that he is in. He is unable to speak, see, hear, has no arms or legs, and so he is essentially unable to communicate or establish a connection with a human being ever again. He feels that he is as close to death as possible without being dead, because he is essentially dead but aware of it. However, he realizes that he is a one in a million that survives; most people that suffer the kind of injuries or even things less severe than him will die, and he feels as if instead of winning he is the one that has lost, because being in this state of conscious death is much worse than just being dead (although he does say for a passage that there is no abstract cause worth dying for). He didn't think he could ever win a one in a million draw, and everyone thought that he had won versus everyone else because he was the one that got to keep his life, but he sees it as a loss because he must suffer with this for eternity... or at least as long as his natural life lasts.