i love incest porn/hentai because it's people who grow up and live together going succumbing to taboo desires, doing things they know they shouldn't do because they're horny
i don't care about incest porn/hentai because the people involved are genetically related. that's unimportant. adding a "they were related the whole time" to the end of a story doesn't impact the emotional heart of that story in the slightest, not if they didn't grow up together
i also do have a little sister and the thought of fucking her disgusts me, this is just fantasies people