Execution. Two reasons to kill him. One, because he's a violent killer. Two because he will never contribute anything to society and is an enormous burden.
Instead, he will need to be monitored 24/7 and kept away from others at all times. He will need to be restrained multiple times in his future as well as fed, medicated and guarded like a - well - er, psychokiller.
WOO HOO!!!! I really didn't want to be the only or the first one to post these thoughts. Honestly what will this person contribute to society? They might get better? How would anyone really know for sure? Anything could set them off again.
Mentally unstable individuals who don't commit heinous crimes should get the help they need, but those with the propensity to commit mayhem should be dealt with.
That is just plain wrong.
By being institutionalized, he is keeping otherwise underemployed psychiatrists and other dangerous characters inside, off the streets, where they can't harm us.