system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do we kiss?
gpt
Well, scientists believe it's almost like an instinctual mate selection procedure. The better you are at kissing, or the kind lips/tongue/teeth you have, could potentially speak for how genetically superior you are. Not to mention, think about it. All kinds of animals have certain things they do to show off their genetic dominance. Whether it's kissing, or dancing, or having beautiful feathers like peacocks do. Nearly all sexually reproductive living organisms have something they use to initiate intercourse. Ours seems to be locking our feeding organs together and moving them around in a way that happens to feel good.