Very good-looking men have more opportunity to stray, so less attractive women would not want to risk being with them out of fear of investing themselves only to lose to a hotter interloper.
Very good-looking men have higher testosterone than less physically attractive men, and are thus more likely to pursue extra pair fornication. Women instinctively know this, and the less attractive of them avoid dating much better-looking men, influenced by their visceral grasp of the relationship power imbalance.
Women’s beauty Vs Men looks
Men place more emphasis on women’s beauty than women place on men looks, and this innate predilection manifests as willingness (and a honed ability) by men to strive harder than women for mating and LTR opportunities with relatively hotter opposite sex prospects. But the most important reason, I believe, is egoism.
Men and women love to enjoy the privileges of their greatest strengths. It brings them happiness. For women, this means that they love the feeling of power that their beauty gives them. A woman who is with a better-looking man has that power robbed from her in subtle and in sometimes transparently humiliating ways; she has to deal with the attentions of female competitors, the attention her lover gives to female competitors, and the unspoken, but not any less felt, degradation of her number one asset. When a woman can’t leverage her beauty because the better-looking man she is with doesn’t value it as much as a less attractive man would value it, she loses a sense of purpose to her life.
Many handsome men attach little respect to their women because they believe if they leave they will lay their hands on another woman immediately. In this regard, they don’t see anything wrong in mistreating women. Abuse in any form is a serious sign of disrespect to women and can be life threatening. Screaming in public, shoves, slaps, punches or kicks, these are physical signs of abuse. Constant name calling and threats are mental abuse. Jealousy, belittling and intimidation are emotional forms of abuse. All are damaging to women's health and self-esteem.