Well, that's a good question.
You see, one of my formative experiences was in the fifth grade, when we had this rather nasty old nun telling us about the Great Flood, and how God drowned everyone in the world because they were "Wicked". (By the way, she said this to every kid being a kid. We were all "wicked". ) I asked, "Why did God drown the babies?".
"Because they were wicked babies! WIIIIICKED!!!!!"
Now, as ass-poundingly retarded as that answer was, and knowing that the Great Flood is a myth, in 50 years of talking with God-Botherers, I have yet to have a one of you tell me a "good" reason why a supposedly benevolent God would drown babies.