Hentai objectification vs instinct

The questionability of women portrayed as being used only for sex, and the human desire to use women only for sex.  Both go against our "civilized" mindset, yet are natural feelings.  Perhaps this conflict between what we see as lawfully or ethically right vs what we see as naturally or instinctively right, is what makes hentai so powerful a combination. 

In other words, how can this be wrong when it feels so right? 

No, I mean like Brave New World.  You simply aren't allowed to procreate normally.  Pregnancy is viewed as bizarre and unnatural, and is inhibited by meds/gene tampering.