It was not my intention to have a debate about wheather it is right or wrong to have sex with a child in this post. But, I can't let this go.

You said,
"There are some problems with having sex with a child that don't just reside in the negative social reaction. Children can be talked into doing something they don't really want to do and then find it revolting for ever after, for example. Sex is not necessarily wonderful to a child even if he seems to consent; in fact, for at least some, it can be horrifying under those conditions."

and,
"That works best, though, when they have a very clear idea of why they wouldn't want to act out their fantasies in real life."

What? You have just described date rape, which is illegal in the heterosexual world too!. Coorcian is wrong.

The clear idea to me is that it is illegal to have sex with a child under the age of consent.