Mh, I actually have an aunt that's married to a some-kind-of-cousin (don't know if first, probably not? Not sure), so maybe that's part of why I'm not so weirded out by it. But I seriously don't get why people freak out about that part so much...
Wow, that reaction to romance novels sounds... super strange

Why would people make these kinds of assumptions?? Humans are weird, sometimes.
Oh, the part about the graphic violence is interesting! I am like that, too - I actually looked away in quite a few scenes in the got tv show, where I have no problem reading about them. I once heard or read something that explained it somewhat like "When you're reading, your brain only ever allows you to picture as much as you can handle - whereas when you're watching something, you have less control over it, so it is more difficult to tune out parts that are too much for you personally". I find that a super fascinating topic, because, yeah, I can read about pretty horrible stuff - just as an example, take the black jewels opening scenes for Lucivar. I would hide under a blanket if that stuff was shown to me as a movie, but I can read it without a problem.
(completely off-topic: If you have the time and are just not looking - there's a roll you should be making ;))