> there's a case that he should have spent his life in prison.
Why? Normally you do this because you want people that cannot reform to stay away without resorting to murder. This person was gravely ill, which is it's own prison.
Why? If he had murdered Edward Shumaker (which seemed to have been what he intended to do), instead of merely stabbing him seven times, causing paralysis, and making him live the rest of his life in a wheelchair while in constant pain before ending his own life via a drug overdose of pain medication, a sentence of murder would be something the judge would have to consider. David Bennett Sr. got off pretty easy for ruining someone's life.
Why? Normally you do this because you want people that cannot reform to stay away without resorting to murder. This person was gravely ill, which is it's own prison.