Well, since we've so thoroughly covered both the moral and statistical angles to write a book on the subject, I think we should also mention the civic angle. Because the US is a constitutional republic, the legislature cannot simply pass a law to solve something. Look, I know that the government does unconstitutional stuff all the time, but the chief reason that gun control advocates will never get what they want is because it would set a dangerous precedent. Here, have another meme:

Outright repealing the 2nd Amendment (which a lot of people would love to see) would allow the government to repeal any of the other first ten. "Hate speech laws" for example, have also been ruled unconstitutional by the Supreme Court. Thus, the government engages in constitutional "workarounds" with Silicon Valley corporations in order to manipulate the narrative because "private companies can do what they want," never mind that most big tech companies are publically-owned.

Furthermore, the massive surveillance state (think NSA spying scandal) was a blatant violation of the 4th Amendment. Either citizens have a constitutionally-protected right to privacy or they don't.

Despite what the current dementia patient-in-chief has repeatedly said, Constitutional Amendments are absolute, and the statement that "you can't yell 'fire' in a crowded movie theatre" is just as invalid as the statement "you couldn't buy a cannon when the 2nd Amendment was written." The reason I bring that up is because far too many people who go after gun rights are also after free speech; maybe not in Australia, but it's certainly the case in every other country that has introduced stricter gun control in recent years; Switzerland, Canada, and Serbia are prefect examples.