The only power which females have is given to them by males. The only thing which females do with that power is use it against males. Lemma 1 for Theorem 2. Any voluntary system must be to the advantage of the female or the female will not participate. Lemma 2 for Theorem 2.
Females are never satisfied.
Lemma 3 for Theorem 2. Females will use any argument, however ludicrous, to increase the costs of sex and particularly to avoid physical sex. Females will use any argument, however ridiculous, if it suits their purpose. It is only necessary for females to know that an argument exists, and that a body of people concurs with it, to apply it. Females, if left to their own devices, will treat common animals better than their own males.