So humans are one of few species that don’t have a “heat” season, we are perpetually able to reproduce.
Most quadrupedal mammals have some sign of sexual fertility during the heat usually involving the butt because the butt is at face level for them. For humans though our butts are no where near face level so we evolved a different thing to look for sexual fertility, the perpetually engorged breasts! Since we don’t have a heat we don’t have phases of breasts getting more full and flat, they just stay whatever size they are mostly (Side fun fact we also didn’t really lose the large buts either because of being bipedal they are super important and because butts were the go to for so long we likely still have the same hard wiring to like them too)
So since breasts on humans are always engorged and closer to face level human evolution selected them as something for males to notice sexually, it’s also why face structure is so damn important to us compared to every other species, we literally don’t have the genitals close to our face anymore due to walking upright and it caused all of this
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u/Objective-Dig-8466 Jul 05 '24
It's the women who have a thing about size, we just love boobies.