I have a pet hypothesis that, on average, those into step porn are more likely not have grown up with a sibling of the gender they fancy. I reckon those of us who did are more likely to repelled by anything alluding to incest.
People who grew up with ACTUAL hot step siblings notwithstanding.
Yeah, stepsister. She’s a raging junkie cunt though, so no attraction from me.
I’ve actually heard that she got sober and is doing much better, but fuck her I’m no contact forever. And I mean metaphorically fuck her.