The modern culture filters out memetically, instead of genetically.
All genes are allowed to be expressed. All genes have equal value.
However, memes are censored. Anyone who does not conform to the meme filtering system is ridiculed, banned, mocked on the news, socially excluded.
The moderns are a kind of fascist, only they are clever about it. They have replaced the system of filtering genes, with a system of filtering memes.
Anyone possessing a meme they deemed unsavory, is thrown in the proverbial wastebasket.
This is why the modern views sex as either disgusting or taboo, or he views sex as a casual thing done for recreation only.
The modern places the real reproduction value, on memetics, not genetics.