That would be too good for him. Americans are too comfy with their usage of the death penalty. At least we Europeans know how to physically break a man.
As for Breivik, I love it when he complains, because that means the Norwegian prisons are doing their job just fine. Breivik cannot be rehabilitated and he will never be released. So there is no point in trying. As someone suggested earlier in this thread, there is something mentally wrong with him, and asked if he could be accountable? I don't think it matters, because he is dangerous and should be kept away from society. Killing 77 people? You've earned your life time in prison.