For better or worse it’s all part of human social networks. The looks, the lingo, etc all add up to help identify in-group vs out-group.
Don’t get me wrong, when I was younger it annoyed me much more. However now I accept that at some level it’s just part of the “human social dance”. Given that large societies, governments, corporations, etc all exist and can function shows that there’s something to it. Who knows, perhaps Neanderthals didn't do these social rituals and that prevented them scaling social networks and eventually dying out.
Don’t get me wrong, when I was younger it annoyed me much more. However now I accept that at some level it’s just part of the “human social dance”. Given that large societies, governments, corporations, etc all exist and can function shows that there’s something to it. Who knows, perhaps Neanderthals didn't do these social rituals and that prevented them scaling social networks and eventually dying out.