It is my personal conclusion that the greater the testosterone saturation a person has, the greater they are to experience things like hair-trigger sexuality. Testosterone sort of primes the sexual response, and if you have a lot of it, more things can trigger the response – such as a fetish object. (Ever notice that the hungrier you are, the more foods look appetizing, even ones that you might not like when you’re not hungry? Same idea.)
It’s fairly common knowledge that men have more testosterone going on than women, and will thereby have more of a fetish issue. However, testosterone is not an all-or-nothing hormone; pretty much everyone has it in varying degrees. I suspect that higher-testosterone women will be the ones that are likelier to be fetish-prone than women with less testosterone, and the same would be true of men.