This is kind of a weak argument, because this goes for literally every law. Even though this is true, as a society you can still make the decision that it isn't okay. By making it as okay as it is right now, you're saying that it's just a fact of life and we need to accept it because of that. Murder is a fact of life too (as in: it happens regardless of it being illegal), but that doesn't mean we need to make it legal.
This is kind of a weak argument, because this goes for literally every law. Even though this is true, as a society you can still make the decision that it isn't okay. By making it as okay as it is right now, you're saying that it's just a fact of life and we need to accept it because of that. Murder is a fact of life too (as in: it happens regardless of it being illegal), but that doesn't mean we need to make it legal.