And yet it seems to be an inherent part of human sexuality : children were being abused by adults for centuries and long before things like child pornography and words like paedophilia were even heard of.
There are numerous anecdotal reports of people still alive who say they were molested by adults in the 1930s, 40s and 50s at a time when there was no discussion whatsoever of adults being interested in children.
Yes, there has to be a natural element to it, to some extent in as much as the urge to have physical/sexual contact is something that presumably exists within those people - I suppose its a nature vs nurture debate (ie for nurture, what they see and may have experienced themselves) as to how they get those urges but at the end of the day, they feel what they feel and they want to act on it. Its a bodily reaction - if they didn't feel attracted to children in the first place then it would never happen in the first place surely?.
ETA - perhaps biological is a better term to use than natural as such? just a thought.