system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why don't humans have a mating season?

Humans seem to be sexually ready to reproduce at all times. Why don't we have a "mating season" like most other animals?
gpt
Jared Diamond discusses this in The Third Chimpanzee. In brief, sex is a means by which a woman bonds with her mate. Since human babies take years to raise this bond is critical and therefore it's beneficial to any offspring if their parents get it on a lot. This makes year-round sex a good thing so male partners don't run off. Also the woman's body hides her own fertile time from her so she doesn't just try to have sex when she isn't fertile. The selective pressure of that adaptation should be pretty obvious. This implies lots of our ancestral women were using the rhythm method at some point, and evolution selected for those who were bad at it. Because babies.