You claim saving just one life is worth taking away the rights to gun ownership. Well it is a proven fact guns save more lives in areas that allow them. By taking away guns you are creating more deaths.
If you want to really save children's lives, take away the rights of women to have abortions. Owning a gun doesn't mean you will kill someone, having an abortion you are killing someone.
So if using the logic you that you are to take away guns, it's a no-brainier that you should take away the rights of women to have abortions.