I get what you're saying, but many pedophiles don't need children to be dolled up beyond their years to be sexually attracted to them.
That is most probably right. There are as many mechanisms and triggers of sexual arousal as there are people on this planet. It doesn't matter what get's your blood flowing as long as it flows in the privacy of your own home or between consenting adults. Acting up on your urges towards minors is a crime very few of those aroused by kids are actually going to engage in.
You don't think that there is inherently something hard-wired wrong in their brains?
I'm not a psychiatrist so I don't know. I don't think the pedophilia gene was found yet, but I wouldn't rule out it's genetic origins. If it's a mental disease (I think it's more-less safe to assume it is) it's a reason to treat people afflicted by it more humanely - not lynch them.