"Guns can kill" is a completely dishonest argument. Alcohol kills, and people under the influence of alcohol kill, more people than guns, even with the laws on the books. Alcohol serves no valid non-medical purpose in society. If it's about saving life, we should be pushing to ban booze...which was tried disastrously.
AIDS spread by gay men kills more people than guns. Would it be unreasonable to require blood tests before engaging in such behavior? Nor does society as a whole particularly benefit from unsafe sex outside of wedlock.
"People die" is a completely invalid and dishonest justification for restricting rights, and SCOTUS says so. Such arguments were tried for booze, for porn, for AIDS, for any number of things.
So I won't even entertain such arguments.
However, I can argue that if we assume that all guns magically disappeared, and none of those dead were killed in some other fashion, it would still take 1000 years of so-called "gun deaths" to equal the body count the Nazis managed in under a decade.
So against the possibility that the US just might be ruled by some murderous nutjob some time in the next 750 years, I will not only keep all my guns, I will seek more, and I will seek bigger guns that shoot more bullets.
For the children.