> This absolutely makes sense biologically/evolutionary because everyone needs to find a mate somehow.

Also because predicting the most favored traits one or two generations down the line is difficult. Biologically you want as much genetic diversity as possible to ensure at least some have the right traits to survive the next cataclysmic event.

As a contrived example, if every man only went for women with big breasts that would be a real issue of a couple generations later swimming speed became important for survival