Pushing the margins isn't always a good thing.
There are some places you let your brain go because it is interesting, if scary, to let your brain go there. What does a murderer think like? A serial killer, even? A terrorist? A heartless black-ops type?
Those are sort of "theme park ride" thought processes. We do them because they're fun, if creepy.
Then there are places that push the margins: people (guys, in particular, and especially men playing female characters; it's one of the easiest ways to spot same) tend to detest rapists with a kind of bone-deep loathing. It's a visceral reaction. Likewise, people who personally commit acts of violence against helpless innocents, especially children, tend to get a knot going in our guts.
These can still be played, and sometimes are. OOC reactions will be mixed, and sometimes quite hostile. It depends on where people's own boundaries are.
Pedophilia (the mental condition, not the act of child molestation or rape) is the sort of thing that seems to make people go, "Huh? That's legal?" If we had such a thing as illegal states of mind, pedophilia would be right at the top of the list. Fictional depictions of child pornography ("Loli" porn) are legal in the U.S. only because the good ol' Supreme Court decided that they can't be banned; fictional depictions don't cause suffering to any real children (and are not themselves records of criminal acts), so First Amendment protections apply.
Otherwise? Oh, man, would we ban the stuff.
As for the actual act, we tend to view child-rapist pedophiles as the scummiest of the thick, viscous surface scum of a particularly scummy scum pool, with additional scum ladled on top. Declaring intent to play one of those (and thus at least superficially thinking like one) is much like declaring, "I think I'll go physically soak my brain in raw sewage, just for the luls." Playing one would be comparable to actually doing so.
It'll get about the same reaction.
Minor points for being avant-garde. Major points off for disgusting absolutely everybody. This would be the act of a major, major troll.
