Logically, none of these arguments apply to “step-incest”.
Did those animals you're breeding consent?
I have some suspicions about which issue would be more important to the animals...
And just to be clear, I'm not an especial advocate here! I'm just interested as always in establishing clear logical rules that can then be applied fairly.)
I understand and agree with children, and bestiality being off-limits due to the non-consenting nature of any sexual interaction with them but a fantasy re-enacted by actors about incest/stepincest or even playing dead people? Why do you care? It's someone else's kink, not yours, you wouldn't like if the majority of people thought your vanilla sex kinks are off-limits (no more missionary for you, it's disgusting!).
There are reasons beyond sex why incest (even with non-blood relatives) and bestiality are off the table. Not because of "vanilla" as you put it, but because they come with other costs. As does unprotected sex with multiple strangers, another stupid trope promoted in porn.
So far nothing in that statement makes it comparable to bestiality or child porn, at all, why is that for you? Think answering this can move this conversation forward...
