Wheelman said it very well, I, too, want my fantasies etc more coming from what there seems to be in reality. But there's always the other aspect - people get turned on by a fantasy about scenes which would be impossible in the real world, so they write stories about it in which, let's say, an Ariana Grande terrifies and humiliates a Serena Williams, in the extreme, exaggerated case.
Sometimes, though, people know little or next to nothing about the real women behind the characters but keep staying 'facts' about them, which can get a bit pointless after a while.