The problem of evil/suffering when it comes to children

[Reforged]

Evolution; whatever survives passes on its genes. Thats it. Remove this idea that it is a designed process with the purpose of making a perfect being. It is not and you are operating under a false assumption. It is natural selection. Whatever works, works. 
Needless to say that father will not be passing on his genes and other species do kill their children and mates. This does happen in other species but it doesn't happen often percentage wise in any species, including our own, because the genes responsible for that are not conducive to survival or offspring.

Wiping out the human race doesn't work, use your brain, wiping out all other species doesn't work either, that's one reason why evolution holds no water.
Most abused children survive and go on to abuse their children at some point evolution wise this will destroy mankind, why because it's getting worse and man desires material things over loved ones, just look at the top reason for divorce, money honey.

GC

Someone who has genes that make them more prone to violence doesn't indicate an absolute certainty they will submit to those instincts.
There will be a varying small percentage who through a combination of nurture, experience and strength of will learn to curb those tendencies. However, the genes behind those tendencies will remain and be passed onto their offspring. These are a minority in a minority however.
Either way the vast majority of human beings in Western society do not abuse their children and the "increase" is proportional to the expanding population. The reason why you are seeing more reports than you would have in the past is that it is no longer an accepted behavior in mainstream society. It is no longer permissible to turn a blind eye, we are forced to look at it where it is present and it is still present. 

So how about you "use your brain" or failing that; your manners.