If you think in terms of sexuality, men would like to have sex all the time. It does not take a social fad to induce this within the males since this is natural. Females like sex, also, but not as much, and not as often as males, due to their own natural female cycles. If we add this up, these is excess male demand for sex and limited female supply for sex. This is why males tend to rape women more than women rape men; demand without enough supply. Men will have to pay for sex one way or another; rings, dinner, movies, flattery, lies, etc, to balance the equation.
Prostitution was invented to add to the supply, but most women keep this taboo, since the lack of supply gives them more leverage over their males. If supply was to equal demand women would lose leverage. In a male world,this is a woman's trump card.
This systematic leverage of the female, can be used for good or for bad. In modern culture, women dressing like ho's is connected to an attempt to induce more demand, thereby giving more leverage over the males. If guys are horny all the time and you limit supply, they are more compliant to even irrational demands. While abortion, divorce and birth control help raise the supply in the open market. The women get the profit.
The free market dynamics come down to female motivation, since the male is linear and instinctive. Marital rape lowers supply even in marriage for more leverage, which is why this scam came about in the first place. I would guess that gay is part of this dynamics and is a way to lower the net demand for women. This is offset by removing some of the supply via lesbians to keep the ratio up.
It does down to what do the women do with this leverage, and does it benefit culture or lead to costly problems? The bible says that women like laws of good and evil, and therefore will like to impose rules on the males; tries to change him using the sex leverage. The dual standard of women's liberation is allowed because it is an accommodation to help increase supply. This is why abortion became more needed; supply trade-off for the dual standard.
If we took sex out of the equation, so there is no female leverage, their influence would not be based on a dual standard; devil's forked tongue. Men would treat them like men and they would have to use the single logical standard. Do the math!
In Muslim countries the female is more covered from head to toe, thereby lower induced demand. Alcohol and drunks which increase supply an demand are taboo. The equation adds differently.