Except he'll have wrecked his family, spent his best years cowtowing to other prisoners and prison officials, will continue to be under conditions of parole for the rest of his life, find it impossible to get a decent job, and be shunned by most people that find out about it. If he can be law-abiding in the community after that, what does additional punishment accomplish? Doesn't bring Tess back.
The Richey family will suffer for the rest of their days through no fault of their own. IMO
He, however, deserves whatever comes his way. It was his choice to kill. Hope he enjoys prison.