Countess has a good point- what if someone is unjustly accused? There is a good reason why SS are sometimes reluctant to intervene, and that is that they know child abuse is not always that easy to diagnose.
We were suspected of child abuse at one stage, because a consultant paeditrician said dd must have suffered emotional trauma to believe she had joint pains when the x-rays showed there was nothing wrong.
Subsequent investigations showed that dd has a rare genetic joint disorder which means that she will always have these pains and will always be disabled to some extent. There are ways of testing for this condition, but not enough doctors know about it. This particular doctor did not.
It was traumatic enough at the time, but at least we've been able to heal and move on. And the scary thing is that the majority of people who suffer from this particular condition go through a period when they are not believed. Children have been taken into care for this reason. So that would be a lot of parents castrated then.
There have also been cases when parents have been suspected of child abuse when the child has later turned out to have a serious medical condition such as a brain tumour.
So what would you do then? A child can be returned to its parents with an apology (if it hasn't died due to lack of treatment, as did happen in one pubilicised case), but what would you do about the castration? Oh sorry, what a shame.