If he's suicidal he's probably hoping that he'll get the death penalty. Living with the knowledge that he is responsible for someone else's death will no doubt cause him more depression and make him even more suicidal. There's no easy way out for this POS. His guilt will eat him alive and cause more mental illness unless he is given the death penalty for first degree murder with extreme indifference. It doesn't matter if he's given a life sentence or the death penalty. Either way his life is over.