That's an interesting point. ok, hentai, so it's not about which foid, it's just about the sex and how it's being portrayed? fuck what foid it's gonna be?
Well, I think I have to explain in a bit more detail.
When I watch porn, of course I get pleasure from watching beautiful women. But that's not extremely strong, maybe a bit stronger than watching a beautiful (even non-sexual) painting etc. Normally I get attracted to women more based on what they do or what I believe of their personality and their smell, but neither is there in porn. Smell obviously not, but if I read about pornstars and it's something I like, I assume it's fake so it has only marginal benefit for attractiveness but if I read something I dislike it has a strong negative effect, so I typically avoid reading anything "external" about pornstars. This means I am typically not strongly attracted to any pornstar, so I don't get a lot of benefit watching it for that.
What remains is watching it for mirror neuron activation. Essentially when I see something I think would feel good (for me), then it also feels partially good for me. Here, attraction only comes into play so far as I have to believe that the performers are attracted to each other. Of course I am way more likely to believe that if they are hot themselves and if the woman is hot I get an additional benefit of liking what I see personally. But the sex itself is also important in that it should be the type of sex I would want to have or just think which "looks comfy". So I prefer comfy-looking sex with unattractive pornstars to uncomfortable-looking sex with attractive pornstars. For example, once I downloaded a lesbian video of two performers who were ... well, definitely not my type ... but the sex looked really interesting and strangely comfy (even though I don't know if it actually was), so I downloaded it. But I also downloaded anal sex of hot pornstars, I'm not _that_ selective. Still, when I am looking for porn I nearly exclusively look for a certain type of porn and even for the pornstars I love, I partially suspect it's because of the type of porn they do. For example, I like creampies and tickling but hate anal. And maybe my favourite pornstar is Amarna Miller and she did creampies and tickling but no anal. So maybe I just liked her because everything she did was "safe" in that I would like it?
But none of that is the reason why my fantasies cannot be produced as porn. The reason for that is that they are simply too unrealistic and often include an "impossible" setting as core part of the fantasy. I also very strongly try to use ... idk if it's mirror neurons, but essentially imagining the people having strong feelings and partially feeling them the same and for that unrealistic settings are nicer as you aren't bound to reality.
For example, nearly all of my fantasies require that everyone is extremely orgasmic (both quick and strong), ticklish (well, my fetish) and sometimes also horny but at the same time experience are in some "bad" situation where they know that it's bad, but can't help feeling good due to the physical pleasure. It's the same fetish I had "forever", or at least even before I watched porn (only after quite a long time I made the conscious decision to watch some "normal" porn to partly get rid of my fetish). I partly blame not watching porn when I had sexual thoughts for having such a weird fetish as I essentially primed myself with sexualised non-sexual stories instead of getting attracted to "normal" sex. Maybe it's also just that I want a way to still feel good even though I objectively know I won't ever have an objectively good life and my fantasy would disappear did I find e.g. a girlfriend.
This fantasy involves how people feel and not so much how they look during that, thus any kind of visuals are probably a bad match. But "real" porn makes it completely impossible as I cannot know their feelings but I know for sure they are not as orgasmic/ticklish/... as required for my fantasy.
The setting is also impossible to replicate in porn because it has to be "real" (inside the fantasy) to work. For example, recently one of my fantasy settings is a place where people are "forced" to participate in sexual challenges all the time (they are genetically modified to not need sleep, food is provided for by people outside like my self-insert who watch the stuff). People who always "win" dominate those who always "lose", and inbetween some people have challenges. Here, for example I thought of building challenge groups of 6 women: Two people in a solo/direct competition (e.g. A and B) and two other people (e.g. C and D) who compete against each other in how good they can dominate the two remaining people (e.g. E and F). The idea is that the loser of the direct competition is then dominated by the winner of it and the loser of the domination competition is as well dominated by the winner of the domination competition and both dominated people then have a challenge against each other (so if A wins against B and C against D, then E and F have the next solo/direct competitions, A dominates B and C dominates D) . I think this could be made a Hentai, but there would not be any story, so I'm not sure it's worthwhile.
And then inside this structure I sometimes think of some challenges. For example the most recent works by making the participants try to walk as far as they can against a current, but with conditions. So a vibrator is configured to keep them on the edge and the participant is punished if she orgasms. For each participant, basically her hands are each tied and positioned with a spring, so they can move a bit, but there is a force keeping them in place (but the springs are put on rails, so she can move with and against the current freely, but e.g. has to keep the arms above her head or to the sides etc.). However, if they pull against the spring, so don't keep their hands where they "should" be, another vibrator provides additional stimulation proportional to how extended the spring is, making it more likely that they orgasm.
They only have two planks to walk on in the water which are separated from each other to make her spread the legs. If she stays on one plank for too long in the same position, water jets are activated which both tickle her feet and make her lose friction so the current will push her to the starting point more. If she orgasms, strong water jets and some soap is activated, making her lose even more friction and helpless to fight against the current. Additionally, in that case she is strongly tickled which makes her lose control of her body and again, less able to fight the current.
To make this challenge progressively harder, the bondage gear (or "drones") progressively tickle her more. By that, it makes her more likely to pull against the spring, activating the secondary vibrator and thus making it more likely to orgasm, thus lose progress, reducing the tickling and thus making it easier to achieve some progress again. That way the average distance from the start can be seen as metric for how good the challenger is.
And I think you can see why this fantasy can never be replicated in porn. Not only does the full fantasy require many, many, people who challenge each other, they also need to have unrealistic attributes, probably non-existing devices (a device to reliably check for the strength of the orgasm?) and have an incentive inside the fantasy which they don't have IRL. So it happend quite a few times that I watched porn, got aroused and switched to one of my fantasies in my imagination as it's simply more arousing.
