[koilke]

"Parental investment theory, a term coined by Robert Trivers in 1972, predicts that the sex that invests more in its offspring will be more selective when choosing a mate, and the less-investing sex will have intra-sexual competition for access to mates. This theory has been influential in explaining sex differences in sexual selection and mate preferences, throughout the animal kingdom and in humans."

https://en.wikipedia.org/wiki/Parental_investment

[lotsofpulp]

I wonder if this changes with access to cheap, effective, and easy to use birth control (for both sexes), plus societal enforcement of males to participate sharing their resources to raising children, at least by garnishing wages.

I know many people, male and female, who would be considered prime mating material opting out of having children because they do not want to spend the resources they would have to to raise children.