Youre missing an important detail - how many deaths / maimings per violent offense. If violent offences dont drop but those do, worth no? How about school shooters - will people no longer crash out and attack their classmates? No. We havent solved the underlying issue, however, such a crashout sans guns seems siginificantly more preferable to me.

besides, the usa has proven that freedom to access guns doesnt protect you from dictatorships / authoritarian governments. That was the main stated constitutional reason for having that right.

So the USA hasn't seen any benefits from free gun access ans has lost uncountbaly many lives to death and trauma. How is it still justified?