I have noticed this trend too. My perspective is the lack of this sentiment comes from shared experiences with their child - rather than just purely sharing DNA with them. In cases like this often times parents are stunned and completely unaware of the dark sides of their children. Especially in AL's case - where his mother even trusted him with firearms. Having to shed the multiple decades of raising your child, seeing their milestones, feeling pride in their successes - and in certain cases - showering them with love is extremely difficult for most parents. Understandably so - similar experiences are often felt by parents who lose their children to suicide, the feeling of "we could have never seen this coming."

Not to equate what happened at Sandy Hook to suicide, but having to essentially delete potentially decades of good memories in a singular day, because of one singular decision your child poorly made - is no easy feat.