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I'm willing to bet:
Women want sex as much as men do.
They just don't want to be viewed as a walking dick holder. Even in the enlightened 21st-c-west, women who are too free with sex are viewed as lesser human beings, useful for scratching an itch, but otherwise deserving of contempt. Which means women typically want sex *and* some emotional attachment.
(And I can't imagine the jealous types who troll here being okey-dokey with a world full of "easy women." They want women to be "easy" with them, but I suspect they'd prefer chastity with regards to other men).