The argument that people will break the law anyway so we might as well just not have the law at all is not a legitimate point. We shouldn’t still be having to say that here; this isn’t third grade.
“Gun culture does exist, and you can’t just take away people’s guns.”
Why not? Does the existence of drug culture prove that we can’t take away people’s drugs? Does the existence of polygamous cultures prove that we can’t enforce monogamy? Just because something has a backwards and deranged culture associated with it doesn’t mean it has to be legal forever.