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Kissing actually originated from our ape ancestors. A tradition among many modern primates is to pre-chew the food for offspring prior to weaning.
The ultimate display of affection is to offer food. It became erotic with time. What better way to ensure propagation?
This is a simplified, and more sociable summary of what suckonthis9 said.
Is it normal I do not understand the purpose of kissing?
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Kissing actually originated from our ape ancestors. A tradition among many modern primates is to pre-chew the food for offspring prior to weaning.
The ultimate display of affection is to offer food. It became erotic with time. What better way to ensure propagation?
This is a simplified, and more sociable summary of what suckonthis9 said.