i guess not having insults to give when we're frustrated is going to eventually make us explode with rage and anxiety for not being able to express our anger on someone's actions it's only going to give us the urge to express it in a different way and of course it's physical , so i guess not having dirty words is only going to make things bad, because there's going to be a lot of physical violence, so yeah I'm glad we have dirty words , + there is a lot of weak people who can't defend themselves physically so instead they do it with words , so you can imagine how hard it's going to be for them if we don't have these dirty words