I personally find it sort of ridiculous...
For the last 100,000+ years of human history, people married as soon as puberty hit. Worked fine for 100k years, now in the last 150 years, we decided we knew better...
Back then, birth rates were high, and people were usually healthy until they died of whatever illness took them.
And almost miraculously, in the last 150 years, the rate of allergies, mental illness, mental retardation, and cancers have increased incident rates 5000 fold.
Science has empirically shown children born to teenage parents have far fewer health problems, live longer, and have a higher propensity to be of above average intelligence.
Old, withered eggs and old withered sperm that have had decades for genetic flaws to replicate and mutate just aren't the ideal starting point, from a logical and scientific standpoint.
Notice how history at any given time is full of great men and dynamic leaders advancing civilizations through art, design, war and construct...
And these days the best we can hope for is a Farang, a Merkel, a Trump, a Nye, a Macron, a deGrasse-Tyson and a Putin?
Where is our FDR, our Stalin, our Oppenheimer, our Churchill, our Einstein, our Lincoln, our Grant, our Franklin, our Jefferson, our Washington, our Davis, our Lee, our Napoleon, our Wellington, our Paine, our Peter the Great, our Galileo, our Henry, our Medici, our DaVinci, our Machiavelli, Wallace, our Wenceslas, our Genghis, our Louis, our Richard, our Saladin, our Constantine, our Aurelius, our Augustus, our Caesar, our Alexander and Xerxes?
Every age has been permeated by great leaders and thinkers advancing science, art and civilization until our own. Now we substitute our technology for science, and for all that may reveal to us, in terms of far away places, it does nothing to advance science itself. Now we simply quibble about whether or not the last 150 years of recorded data indicates a trend in earths 4.5 billion year history. Our societies only project for advancement, is to quibble about whether are not we are racist if we oppose being bred out of existence by mass immigration of uneducated third world breeders imported on a massive scale, to keep wages low for industry.
But whatever. Humanity is bent on it's self destruction, and i like popcorn.
Edit to address the 'warning' >>>>
The purpose of the post is to point out what is considered a 'child' in the last 150 years or so, has changed drastically.
As recently as 1900, a "man" of 16 would have owned and managed 5-10 businesses and estates, and usually have his first if not second child to his wife of a similar age. He would be expected to enlist and fight in wars of the nation. Today, we still classify people of 27 as children if they live at home.
Hopefully, the sexual reproduction laws catch up with the health-care laws, and it will soon be pedophilia to have sex with any person who is below the age of 30. Because, as we all know, the law is the best arbiter of common sense.