Likely due to your uninhibited psyche in the midst of a personal sexual experience, in regards to a moral plug in reality caused by your interest in the pornographic depiction of said inhibited potential sexual scenario with your sibling. It can be used for those doubting why they aren’t brocons either. Basically, your brain says “no liking your sister/brother more than necessary” since your mind finds solace in your sexual interest of incestuous pornography. It’s not a negative scenario. I’m much like yourself, though I’m not a brocon…. Since I’m a girl. I’m not insinuating that I’m gay. Hope this helped. And I apologize for the rather wordy explanation. Oh yes, and I’m a psychology nut, I didn’t just pull this out of thin air, haha.

Porn is porn all I can say

i dont know but i think incest is disgusting i think japanese creators of hantai’s are addicted to it hell they probably have sex with tthere siblings

what you have fantasies about have nothing to do with reality. but in the event of a ridiculous situation you might start doing things that you otherwise wouldn’t. if you watch rape porn you probably aren’t any more likely to commit rape under normal circumstances, but if you are trapped and about to die, for example, you might be more likely to consider it than someone that doesn’t watch rape porn. doesn’t make you a rapist in waiting, though, it just means you might be more likely to consider it.

It’s the so called “Westermarck effect”.