I think it is common for women to reject being turned into a fetish object mainly for three reasons:
1. The woman is most definitely objectified when she is used a fetish sex doll for the man's pleasure; i.e. the focus is on the man's pleasure, not the woman's, and this is most likely the reason for the resistance of objectification.
2. There would be no problem at all with #1 if and only if men knew how to have good sex. The sad truth is that most men, I think more than 70%, have no idea what to do with a woman, so the woman never really has good sex because the man is simply incapable of engaging with the woman on the level that the woman would need in order to be truly satisfied. I mean, if a woman is not having gushing and screaming orgasms, then she is not experiencing her sexuality to its full extent.
3. Because of problem #2, rather than wishing for the man to be better in bed, but giving up all hope that he ever can be -- because unfortunately most men cannot be taught how to be better sexually; they are either already very good naturally, or not. If they cannot figure out how to become good on their own, no amount of 'sex therapy' or 'kinky sex' will ever help them to become what they are not -- women who are unhappy in bed I think tend to crave the feeling of 'being loved' more than of good kinky sex, probably because she seeks comfort for the fact that the man cannot please her and satisfy her to the extent that would be necessary for her to become open to the idea of taking turns objectifying each other to enhance orgasmic pleasure.
There is nothing at all wrong with objectifying a lover for the purpose of outrageously good sex; humans objectify each other anyway during sex, so bringing fetishes in just heightens the objectification, and this can be very, very sexy when it is done well. Unfortunately, most people, both men and women, have no idea how to have good sex, and so, bringing objects into the bedroom ends up compounding the sexual problem further rather than alleviating it!
