I hear what you say, papaoscar but I don't agree that everyday relationships with children should be scrutinised and poked at to see whether there has been any impropriety. Neither do I think that men in general are tainted because of these few sex offenders. We bring children up to be aware of risks around them, from falling off the sofa to learning at an appropriate age that they should be able to consent to or refuse anyone touching their bodies in a way that upsets them or makes them feel uncomfortable. Till they get to that age, their carers and protectors have a responsible job to do in keeping them as safe as they can without stifling them.
The default position is that children's carers are expected to, and do generally, protect them. None of us is immune from harm befalling us in some way, but we take appropriate measures. I wouldn't want to scare the life out of the children I know, nor would I place them at risk to test whether they can manage. I certainly don't want loving dads, uncles and grandads to be looked at with suspicion (unless they give rise to suspicion, of course). To think of my adult, responsible son being banned from changing the odd nappy whilst he gets in practise for his own children, or questioned with suspicion, is just not right. The moral panic that these cases bring should just remind us to try and protect all children and raise awareness about how sex offenders operate. You should be able to cuddle and care for the children in your family without worrying what anyone else thinks.
Unfortunately, some children will still be harmed - our whole society needs to look out for them to try to reduce the risks, as has been discussed over children recently in the news.