The founding fathers recognized that right to bear arms, among the other inalienable were rights bestowed upon man by God. Those rights existed prior to governments. Amending the constitution cannot cancel the 2A.
While I would never advocate it, I can assure you, there are many politicians and judges who would not agree with your sentiment, and if amended, would cast it off as though it never existed.
They would argue THAT is the ONLY way the 2nd Amendment, or any other could be altered.