I'd call it realistic writing. You wouldn't believe the shit I've seen women do for some megadick. I've watched them change careers, change college majors, move across the country, move out of the country, switch political parties, both give up and start drug habits, etc. Yes, it's awful to say this, and yes it offends my sensibilities, but that doesn't mean I can deny what I've witnessed. It is like mind control, depressing as it seems. Obviously we guys do this too, and it's just as bad when we do it. Endorphins are like any other drug, and addiction is always terrible thing to behold.
Of course I'm also apparently the only person here who isn't using the incest patch, but to each their fetish, I guess.