Women eventually won the right to vote in many countries and own property and receive equal treatment by the law, and these changes had profound impacts on the relationships between men and women. In many societies, individuals could decide—on their own—whether they should marry, whom they should marry, and when they should marry.

Employers are expected to close the loop when someone sends them business correspondence, which is what a job application is.

With online dating, there’s more of a cultural norm (among most people, at least) that if you’re not interested, there’s no need to respond to say that; it’s okay to just delete the message.

However, one particularity of the human species is that pair bonds are often formed without necessarily having the intention of reproduction.

In modern times, emphasis on the institution of marriage, generally described as a male-female bond, has obscured pair bonds formed by same-sex and transsexual couples, and that many heterosexual couples also bond for life without offspring, or that often pairs that do have offspring separate.

From about 1700 a worldwide movement perhaps described as the "empowerment of the individual" took hold, leading towards greater emancipation of women and equality of individuals.

Men and women became more equal politically, financially, and socially in many nations.

Dating is a stage of romantic relationships in humans whereby two people meet socially with the aim of each assessing the other's suitability as a prospective partner in an intimate relationship or marriage.

It is a form of courtship, consisting of social activities done by the couple, either alone or with others.

You might think it would be more likely with the dudes whose initial messages are already a little sketchy, but it’s not uncommon to also receive abusive responses to rejection from the guy whose first message was polite, unassuming and/or charming.

Given that, it’s just the smarter option for women who don’t want to field a bunch of hostile and insulting messages not to respond to people to say “thanks but I don’t think we’re the right match.” Now, it’s certainly true that some job applicants also respond to rejection with hostility, but (a) they’re far less numerous than in online dating, (b) the intensity of the hostility seems to be lower, and (c) it’s part of the job in that situation to deal with the occasional whacked out response to rejection.

Neurobiologist Robert Sapolsky constructed a reproductive spectrum with opposite poles being tournament species, in which males compete fiercely for reproductive privileges with females, and pair bond arrangements, in which a male and female will bond for life.