It's funny, because the Romans often argued about their own traditions and sometimes couldn't even figure out the origin or purpose of them.

I'm currently reading a book about how the Romans didn't even understand what one major segment of their commonly-worshipped gods were SUPPOSED to be (the lares, which are cited as everything from ancestral ghosts to nature spirits to the soul of individual places to the equivalent of friendly household gremlins); but my favorite example is always a conservative Roman jurist (Gaius, maybe?) musing that he didn't actually know why the fuck women were supposed to have a male guardian for certain legal procedures since the law otherwise recognized them as capable independent agents.

For such an immensely rules-and-organization oriented culture, they really just pieced together a society and tried not to think about it too much. XD