I’ve been told humans are not naturally monogamous. It would have been very natural 20.000 years ago for us to see people fucking, get aroused, and get in line. I’ve been told a the evolutionary benefit is that this way nobody knows who the father is so everyone takes care of everyone’s baby like their own.
Another piece of supporting evidence is the shape of our penises. It’s shaped like a cum plunger to get your gene’s competitors out of the way and give you the best shot at being the baby daddy.
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