From the day you enter school, any information that suggest pleasure outside marriage is censored to protect children’s “morality”.
The reason behind anti prostitution laws, besides prohibiting prostitution, is to actually keep prostitution underground. Government doesn’t want you to know that you can just pay.
You go to school for so many years. 20 years. How many time they taught you about how child support works or how costly alimony is? Think about it. Government teach so many things in school no body need to know, like ethnic studies, or literature. Yet, whether you want to get married or not is probably one of the most influential decision you will make.
We can experiment putting a big poster of the handsome milk man next door, showing six packs, in front of our wives when we mate. Then we can check what percentage of our children somehow look more like him. Alternatively we can also show pics of the young nubile school girls in front of the husbands and see how the school girls’ babies look like.
It only works if what you see actually change your mates. It doesn’t work if you just mate with the same mate and see different things.