That's your personal opinion, but where is your objective evidence supporting that opinion?
While rape roleplay may be a popular fetish in real life, incest appears to be more popular than rape in fiction. Here's yet another example proving this point using objective data. If you look at the number of stories in different categories at
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you'll see that the top 10 (out of 32 categories) are:
- Erotic Couplings - 52,615 stories
- Incest/Taboo - 41,825 stories
- BDSM - 32,222 stories
- Loving Wives - 29,450 stories
- NonConsent/Reluctance - 22,129 stories
- Group Sex - 22,122 stories
- Exhibitionist & Voyeur - 18,599 stories
- Gay Male - 17,796 stories
- Romance - 16,105 stories
- Sci-Fi & Fantasy - 15,876 stories
So, "Incest/Taboo" is second only to vanilla sex, and has more than double the number of stories of 26 of the 32 categories there. Meanwhile, NonConsent/Reluctance has only a bit over half as many stories as there are in the Incest/Taboo category.
Considering this and the "
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" shown earlier in this thread, the incest genre is pretty popular any way you slice it. Even more popular than the rape genre, at least in the English speaking parts of the world.