In regards to pornography consumption, it is fairly simple: Today's porno is by and large by men for men. It is not that women are immune. It simply is not designed to appeal to them. In recent years, some "sex therapists" have been designing "sex videos" to appeal to women's tastes. If the porno industry focused on making porno for women, their consumption would probably rise as well.
Proposition: if porno was designed to appeal to women, the anti-porn crusader's ranks would diminish by half.