>>122266635Secondary sex characteristics that add novelty to the perceived biological norm. It's different, ergo unique and appealing. Humans hardwired to seek novelty to increase conception chances, genetic diversity in offspring.
Like petting a soft-furred animal is usually pleasant, and calming, paired with another pleasant dopamine hit like sex, our brains trick us into thinking the result is cumulative.
Reality is, it is anyways. It's why humans fondle all over each other for affections. Try it. It's pretty nice, and leads to corrections of neural aberrance, like spanking it to cartoon rabbits.