@Attention@ Why many INCEST Stories are in open forum?

[tirths2000]

It is easy to sort the type of stories by prefix here with this. 

Select and click "GO".

Dear Sir,

You response did not address my fundamental question:

What is the reason why only "incest" is hardcore, and other penetration, adultery, cheating, gangbang and fetish stories should remain in "open".

They are all hardcore, and should need readers to log in if you will.