In modern Western societies, a large number of men can or could quite easily adapt to a highly promiscuous lifestyle. A natural limitation lies in the number of available women. A large number of women may not qualify due to a perceived lack of attractiveness. Furthermore, men who cannot compete well for a multitude of partners will exhibit tendencies to bind attractive women in long-term relationships, thus reducing supply. And last but not least, a large number of women have a definite interest in binding reasonably good men in long-term relationships before their own attractiveness declines further and their chances become fewer. All of this results in efforts, including legal measures, to restrict sexual choices for men of comparatively high market value. Philanderers are not welcome. Women compete for quality men, and once a quality man is secured, it is very important for women that he is not lost. All kinds of strategies that function to this effect are considered viable.
