I've seen waaaaaaaaaaaay too many vids where the fisted is just....silent and it takes them an hour of hard fist pumping action to emote even the slightest of sign of pleasure. I'm thinking it's different for everyone, but for many...it seems...it's been desensitized. Kinda like how camgirls with all the fake white liquid mega-squirts and extra-water-consumption piss-explosion "squirts" are just faking it for performance shekels...i think a lot of fisting is...it's just inevitable stretching that doesn't really equate to more pleasure or sensation. It's just...pushing the limit pushed into banality. Imagine having to stuff a 20 pound leg-length dildo up your girl just so she can feel a smidgen of an orgasm...and nothing before it. That's how so many fisting and mega-dildo vids come off as.
Fun while the illusion is alive, though, right?