So the argument that violent felons should not have guns is not "a good argument?"  The argument that people suffering from mental illness should not have guns is not "a good argument?"  

In all of your Second Amendment wisdom please highlight where the right to own guns can be restricted in the case of felons, as has been held to be permissible by the Supreme Court.  Then you can get to the part where ownership is prefaced with participation in a well regulated militia and that clause now being completely ignored subsequent to the originalists departure from the text of the Constitution.