>>87562
I think there's tinges of this
>>87581, and I agree with all of this
>>87622, and this just seems like a good time >>87614, but what really comes to mind was an old series of posts by a guy that was avatarfagging Sigmund Freud and analyzing everyone's tastes and fetishes in porn. The gist of most of it was people asking, "Am I a weirdo for liking such-and-such porn?" and the Freud poster replying with "Probably, but here's the underlying reason you enjoy that type of porn so much."
His post on incest porn I think is somewhat relevant here, and I'll try to recount the idea as best I can. The short version is that most people that watch incest porn or that hokey step-sister fantasy stuff are largely not interested in fucking any of their actual family members
(cue sigh of relief from all the posters in that were in that thread). What's appealing is that close, familial relationship that incest porn sets-up as a premise. By virtue of being family, the characters involved already have a long history together, they know each other's quirks and ticks, and barring something horrible happening during the story, their love is unconditional. Maybe the sex will complicate things, but that familial love would still remain.
Per the Freud poster, the problem here was less about breaking some gross taboo, and more about a generation that doesn't know how to handle different types of love and issues with forming deep, personal connections with others. Fans of this porn will see the family members in these set-ups, and all the work and history that goes into making that relationship is already there, done and set in stone. It's also, like a I said before, unconditional, so it's also a relationship that is almost a given. Compare this to the dating world and you have all the opposite conditions: meeting a total stranger, learning about them and sharing bits of you, and even if you put all the work you can into it, it may just be a bad match. It's hard, it makes you vulnerable, and it can be stressful, if not just outright scary. So, why not fantasize about the hardest parts about a relationship being done way? Why not fantasize about relationship that has been growing for decades and can never totally be broken? I think the final tone the Freud poster went with was that liking incest porn isn't that weird, but it is rather sad.
Bringing that back to unkempt women, I think there are some parallels, at least in how these women are visualized. The goal is to depict someone being absolutely comfortable, often to a fault. Too much body hair, overweight and lumpy, and low energy. It's a side of you you only show to someone you know well, so in that regard, there's something personal and romantic about it. Their guard is down, the mask is off, and they trust you.
Now, I don't mean to imply that going to bed with your wife, tucking in and cuddling under the covers, and then letting out a fart is a sign of trust, but it kinda is. It could be a deal breaker on a first date, but it's hardly worth a though later on.