Freeuse is one of those things that pings in my monkey brain as super hot. The thought goes something like "ah yes, I can finally fuck her in all the weird ways I want and she already agreed up front!" It's the pure selfishness of it, and she already said yes, so it's totally fine.
But the reality in porn and irl is it's usually boring. There's a couple exceptions I make to the boring porn in this category, but it's less actual freeuse and more like "I'm just gonna bend over/be on my knees. Please blow my pussy out and creampie me." (That shit's hot, no question). No being on the phone, etc. Just a woman who wants her man to mount her and use her body for himself. I think that's the actually hot category. "Gf/wife lets bf/husband cum deep" that shit is generally hot as fuck. It's different than freeuse because she's not distracted. She's part of the scene pushing her ass back into the guy, moaning, whatever. I think that's the fantasy that freeuse appeals to but fails to actually reach.
It applies to irl as well as porn. One of the hottest memories that I have and still comes to mind when jerking off (for young people, having a visual memory was necessary before porn was widely available lmao) was my gf at the time was riding me and she came on top of me (hot) and then immediately got off, clapped my chest, and said "ok. All done." I was like wtffffffff I'm getting blueballed wtf this bullshit. So I just stood there while she got half dressed, put panties on, and she looked at me like I was a completely pathetic dumbass with a boner. Which of course I was. I was like two pumps from cumming when she got off me, something she surely knew after a couple years of regular sex together. She just goes "what? You finish all the time when I don't. Go jerk off or something." (i hadn't even said anything this whole time btw. I was just in raging boner horny shock starring at her body). She walked around and found her phone and sat down reading texts or whatever. I just kept standing there like a dumbass kid who got his candy slapped away. She looked back up at me like a minute later, rolled her eyes, and said "alright. Hurry up." And she took her panties back off and got on her hands and knees on the bed and looked back at me. I don't think I've ever nut harder before or since in my entire life.
That's the fantasy I always hope for in freeuse, but rarely find. Maybe it was the mixture of sort of submissive dominance, femdom, denial, I dunno. But holy fuck. Sometimes I find videos like that, but rarely (anyone with suggestions him me up!) in the freeuse category. Usually it's something like "milf teaches son's friend how to fuck" or something like that.
(Long-ass digression, and I don't apologize. It was necessary!)