Scary.

Every night when I'm playing with my kids before bedtime, getting them to giggle and laugh, I pray to myself that they are never involved with such tragedies. I ponder this question often..... babies are inherently happy; at what point do people (humans) transform from wanting to be happy to wanting to cause harm/misery? (Has nothing to do with present day lifestyles, ideology, etc.... its been this way throughout history)