It's harder for women than men
A woman can only release about 400 eggs in her lifetime, and only about 20 of them can turn into healthy babies at most.
Women pay a huge price in the process of conceiving and raising children.
In contrast, a man can release 100 million sperm in a single ejaculation.
Once fertilization is complete, the male physiological task is completed.
Male genes and female genes have the same chance of passing on to offspring, but men invest far less than women, unless women can make men take on the responsibility of raising offspring.