>>20580105As those who were a bad judge of character/health were weeded out when their mates produced unfit offspring, or failed to rear it well, we have evolved to aspire to a high quality of mates. But the future belongs to those who show up for it, and having a foot in the door pays off more than carefully preparing until it is closed.
We see this in the decline of Western birth rates, where young people tend to their education and careers to ensure that their children grow up in a safe environment, but in doing so they waste their most fertile years—and in the end they might not leave any offspring at all.
Therefore: carpe diem!