The idea is keeping them from getting the guns to begin with. Moreover, we all know we can't stop every gun crime. We're just trying to stop as many as we can.
I'm a responsible enough mentally ill person to know that I shouldn't have guns . . . for my OWN safety. So, I don't buy them. I only use them at a range for sport. Others like me are not that self aware. They shouldn't be able to use guns. That's all there is to it. Also, do we know of any crimes that have been committed because someone was mad about their guns being taken away? Is there precedent for us to consider?
I'm a responsible enough mentally ill person to know that I shouldn't have guns . . . for my OWN safety. So, I don't buy them. I only use them at a range for sport. Others like me are not that self aware. They shouldn't be able to use guns. That's all there is to it. Also, do we know of any crimes that have been committed because someone was mad about their guns being taken away? Is there precedent for us to consider?