How have the courts treated mitigating evidence in a mental health case?

arguing defendant had a "normal childhood" and had shown "no reason for him to turn into a rotten egg." We disagree. The prosecutors argument was that the family background the defense had presented should be given no weight as mitigation: it was a "zero" on the scales. Prosecutors may properly point out the absence of mitigating evidence. ( People v. Wader (1993) 5 Cal.4th 610, 659, fn. 9, 20 Cal.Rptr.2d 788, 854 P.2d 80.) The defendants argument, moreover, was forfeited by his failure to lodge an objection and seek a jury admonition. ( Id. at p. 659, 20 Cal.Rptr.2d 788, 854 P.2d 80.)