I would date a grown man who would watch such things.
As long as he wasn't into such things in real life - there's a HUGE difference - and that this wasn't ALL he watched. A few such films is fair enough because most people's porn collection will include a wide range of different and sometimes questionable porn, but I think that if he was into nothing but animated children being raped then that would raise some serious questions.
I am also of the opinion that such porn should remain legal.
Not just because there's nothing wrong with it, but because it MAY be beneficial for prevention. Note I'm referring here mostly to inactive paedophiles; those for whom attraction to children is sexual preference, not those who see children as objects of abuse. Ideally such people would be able to get help without risk of persecution, however as it is now they can't, they're left to linger with constant guilt and confusion over feelings they [at first] know are wrong, combined with opportunity this may lead to them abusing kids. Simulated child pornography allows an outlet, a guilt-free outlet, that allows them to indulge that sexuality without abusing children.
Normal people don't see such animation and decide suddenly to go out to rape women and children...but people with sexual preference for children however may be less likely to abuse thanks to such animation. I'd take a paedophile watching an animated child over a paedophile watching a real child who has been abused by people who have made money from such abuse being viewed and who will go on to abuse more children as a result. It's not ideal by a long way, but anything that may prevent abuse shouldn't be instantly ruled out based on personal distaste - if it potentially saves just one child, that's reason to keep it legal.
http://en.wikipedia.org/wiki/Simulated_child_pornography#Arguments_for_simulated_child_pornography
*ducks from the undoubted backlash*
Just to clarify - I would NOT date a paedophile.
I felt the need to point that out.
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Bloodheart
Good-looking girls break hearts, and goodhearted girls mend them.