19 peak attractivity? Umm... Is this a feminist blog? Are you tryingAll evidence suggests men prefer girls around fourteen if
Given the chance.
This bitch is at the end of her market value though still very much marketable this bitch knows she cannot compete with a lush childlike beauty of thirteen with all the glory and fun of life as she begins her adolescence towards adulthood so she is supremely jealous. In the past she could have gotten married and been protected through that institution.

@Evind: 19 years old females are usually already spoiled. Only the 20% are as attractive as the 80% post pubescent women between 11/13 (end of puberty) and 15/16. I dont remember many high school mates who were still cute and sexy at 19 like when they were 14. There were, but only a minority (some even improved but it's not natural, like throu diet and plastic surgery).
In combination with an healthy age gap of 10 years or more, they are cute enough to capture men's heart forever, for that reason most part of men who lived that way, don't want divorce or lose their wife even when she gets horribly old. This was the pillar of the traditional family. The past and the time spent together are powerful forces.