Because MEN have made liking penis a negative thing by calling women sluts, whores, etc. also, by using penis-loving terms in a derogatory way: cock sucker , dickhead, peter puffer...etc.
you want females to be open about their love for cock??
you have to stop making fun of people, even men, who like dick..
Its one thing to love teh cock, it's another to be a whore. Most women who are sluts or whores are not so because of the love of penis, but because of deeper rooted issues. Most Somme who love the cock would like to have that one special cock. I've talked to women who have done the swinging thing, and they love all cock, but they only did swinging to brig something new for their relationship---they would rather have their man's cock on order everyday.
There is a saying "a slut is girl sleeps with everybody. A bitch is a girl who sleeps with everybody but you. A whore is a girl who crushes you and moves on sleeps with others..."
I agree that the terminology is demeaning, and is meant to label a woman and her behavior and as a mechanism of control...
