Yes, he's most definitely doing something else than I am doing now. He's getting his jollies from unsuspecting kids. I'm getting mine from unsuspecting adults. If you see no difference...well, that says something about you, doesn't it?
You still haven't explained what you think is fucked up about what I do. Instead of trying to compare it to other behaviors, why not simply tell me what you find wrong with this behavior. If you can't do that, maybe there's a reason you can't.
Around 10 years ago I had a very close friend of mine turn out to be a paedophile (caught during a major national bust). The thing here is I'm both both proud and ashamed to say I shunned him as a result, just the same as all his close friends and family did. "Torn" I believe is the expression!
Please bear in mind that I do not condone paedophilia at all - such is our cultural viewpoint of such a crime that I feel compelled to say this at this point in my reply. However, I would like to pose the question (after giving the matter much thought due to my old friend) that how unethical does it make anything should the matter stay within someone's mind only - that it to say nothing is ever done in practice, merely remains within the mind? Sure, this isn't relevant in my old friend's case (notice how I feel compelled to keep reinforcing that he is my "old" friend and not a current one?) due him him being caught as he had moved his sexual preferences from his mind into actual practice. It is something to consider and think about before immediately jumping to a gut-reaction.
I was married for 5 years without ever daring to tell my wife I had a tickle fetish (yeah, ok, I kick myself now). Yet we had regular tickle-fights, more often than not leading to sex. I'm pretty confident she never knew I got off on it (since the physical proximity would warrant arousal alone). In her mind did I have a tickle fetish or not? Probably not, but in my mind quite the opposite.
In summary, what I am trying to say is that maybe it is not so horribly wrong for someone to get sexual arousal for something in their own mind. If no-one else is ever any the wiser about it, then what harm has it actually done? I suggest no harm, but only the happiness of the practitioner - which isn't necessarily such a bad thing, or is it?
Of course, this is hugely controversial, and I fully expect to be completely shot-down here (and will not even attempt to argue against anyone that does - I'm not convinced you would be wrong in doing so). I just have a firm belief that, when tackling any issue from a philosophical point of view, nothing can be taboo. Making anything taboo simply courts a lack of thought over the issue, and no issue is quite as black and white as it first appears.
Sorry, horrible issue I know. Just interested in other people's thoughts (and I mean thoughts - not just gut-reactions that you're supposed to have because our culture says so).