It's not about knowing all the answers. It's about knowing where to get the answers.
I can still use Yahoo... :D
And what is so wrong with incest, or hentai for that matter, that it warrants "saving"? Incest fantasies are as old as pornography itself.
Fantasies are fine. We learned that a very common fantisy was one of Sado-Masochism. (Google away!)
Those types of fantasys are fine, as long as they don't start to effect your life in a negative way.