Maybe...but fantasy (and to a much lesser extent scifi) has been my main genre since I was a kid. And I just remembered there WAS one time I stumbled across a rather graphic rape (committed by the so-called 'hero' of the series, no less); I promptly stopped reading. I'll mention the author/series if you want to know, but don't want to spoil you without it being invited. I remember now that the event in question made me reject utterly any notion of the character as a sympathetic character, so I decided not to read the author any more.

I think, though, that was the only remotely graphic rape I've read. But now you've got me wondering how many others I've forgotten about.....