I think incest / 'stepcest' stuff is largely popular because:

- it can sprout innumerous plotlines, whereas most visual porn lacks story - the “domestic” nature of it means they don’t have to shell out for multiple sets or fancy sets. - The idea of other people breaking laws and putting themselves in danger seems to add to the dopamine hit of porn. Which is mabe why some people consume violent stuff.

In my op it’s popular with viewers largely because it is favoured by the studios.

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I have to say though, from back in my porn watching days, i couldn’t stand the weird production quality in all the step-incest stuff. And the compulsion to pair up performers who have a big age gap, or to make performers look like teenagers, is disturbing. I doubt these things have changed.

It’s funny to imagine that the government might have a porn-Tsar who is just banning all the stuff they personally consider shite. Should have been me.