This is undoubtedly a benefit to women who felt pushed to accept unsatisfying or even abusive relationships (as studied by Rusbult and Martz, 1992), but it has had repercussions on women's motivation to commit to potentially healthier relationships as well.
Rusbult notes that alternatives and investment are two key components to relationship commitment.
[Further research by Rusbult and Martz (1992) noted that feelings of commitment may persist even with low levels of satisfaction, as long as alternatives are low and investment is high.
For example, the pair interviewed women in a domestic violence shelter on the three commitment factors and predicted whether each would return to their abuser.
For some men, modern relationships offer fewer benefits and higher costs, resulting in less motivation to commit.