There is a famous "couple" in Taiwan Province, China, the reason why they are famous, is really because it is too unconventional, the two initially interacted when the girl was only 17 years old, the man is already 56 years old, the age difference between the two let the media describe this relationship as "grandfather love".
In order to be with her boyfriend who is nearly 40 years older than herself, the girl even broke up with her family, and the girl's father even went to court to sue the man for "obstructing the family", but still did not let the two separate, and even had plans to get married and have children.
We know that in the process of evolution, organisms will preserve a lot of strategies conducive to survival and reproduction, and grandpa love obviously does not meet the law of evolution, so why is grandpa love not eliminated by the "theory of evolution"?
In fact, there are some differences in the physical conditions of men and women, among which women can only use 300-400 eggs in their lifetime, and once the ovarian reserve is insufficient, it will be difficult to get pregnant naturally, and at this time, they will lose their fertility. In the process of evolution, if males spend time and energy pursuing infertile females, their genes cannot be passed on and eliminated by natural selection; in pursuit of females at the peak of reproduction, genes are more easily passed on. It is precisely because of this that women at the peak of reproduction are more likely to gain the favor of the opposite sex.
On the other hand, men make sperm all their lives, and even in their 90s, men are still able to produce a certain number of sperm, and in theory, older men are still able to produce offspring, such as Chaplin, who gave birth to his 11th child at the age of 73.
Natural selection is made through "reproduction," and as long as it can produce offspring, the gene can be passed on. In this context, older males also have a certain probability of passing on their genes.
So some marriages with age mismatch may also exist, but this can only be a niche. This is because although older males are still fertile, the quality of sperm has been greatly reduced; and older males are unable to take care of the family, and the survival rate of older males is greatly reduced compared to younger males.
In "Dream of the Red Chamber", Jia Yu once asked to marry a maid who was younger than his own age, Mandarin Duck, and when Mandarin Duck did not comply, Jia Yu said: "Since ancient times, Chang'e has loved teenagers."
In the process of biological evolution, organisms retain a lot of strategies that are conducive to survival, among which the strategy of "chang'e loves teenagers since ancient times" is very conducive to the survival of organisms, on the one hand, because males in their prime have better physical fitness and better quality of germ cells; on the other hand, because males in their prime can better protect their offspring.
This strategy is particularly important for humans, who have evolved to walk upright, narrowing their pelvic bones, making the birth canal more rugged and narrow, and the human brain capacity is constantly getting larger. Baby brains are about three times the size of chimpanzees and apes, but the birth canals of humans are much smaller than those of chimpanzees and apes. This has led to an increasing rate of human dystocia, and pregnant women and fetuses are prone to death, which is obviously not conducive to human survival.
Under these conditions, humans evolved strategies for early childbearing. The average brain volume of Homo sapiens babies is 1350 ml, and the gestation period should be 21 months, but the human body structure determines that the capacity of the baby's brain cannot exceed 385 ml, which makes the fetus give birth when the brain is 25-30%, corresponding to just 40 weeks of pregnancy. This hypothesis has been called the hypothesis that "all humans are premature babies" hypothesis.
Premature babies, in turn, make it impossible for humans to do anything at birth, and all the supplies needed to survive must be obtained through their parents. At this time, it is difficult to support the child by the mother alone.
Fortunately, the father returned to the family, the father's return can help the mother to forage, raise children, and the survival rate of offspring has been greatly improved, and it is precisely because of this that in ancient times, human beings began to maintain monogamy, and only a small number of men would maintain polygamy.
Compared with older males, young males have a more advantage in mate selection, because young males are physically energetic, have strong hunting ability, and can hunt more prey, which greatly improves the survival probability of mothers and children.
On the other hand, young men are highly resistant to risk, and they can recover quickly after injury or illness; while older males are not easy to recover, but may even be a drag, so the survival rate of offspring of young men is significantly higher than that of older males.
It is precisely because of this that the current mainstream marriage relationship is that young women look for young men to marry; but there are also some non-mainstream marriages, although these non-mainstream marriages do not conform to the law of evolution, but there are also some individuals who can pass on their genes, but this gene is not mainstream, and their existence does not affect the course of human evolution.
Of course, there are also some grandchildren who are also mixed with other factors, such as: money, power, etc.
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