Under age meaning what? Prime years for a woman's fertility are 14 to 24. Peak comes in at 25 and then the slow decline until 35 begins. We are hard wired to be attracted to signs of fertility.
As far as attractiveness goes, the perfect soft skin, supple breasts, tight ass and unwrinkled face... Will always win out versus some used up hag that's had 35 dicks in her with sagging tits and ass, sun-destroyed skin and a loose box
This whole marry and impregnate older women trend started in the1900s to protect the value of old pussy.
Delaying the onset of adulthood until people reach their 30s has been a huge detriment to society. Kids spend years in school learning all kinds of worthless bullshit when they should be taught the what they need to get out there and start making a life for themselves. Grammar, math, history, geography and economics. Basically the inefficient school system is stealing about five years out of everybody's life. Biologically speaking, the 20 to 25-year-old man should be knocking of the 16 to 20-year-old woman not waiting until he's 35 to pick up some disgusting use of skank whose gone baby crazy