I personally doubt removing legal guns won't mean that people still won't get them some way.. such as the black market. It only means that your average Joe won't have one to defend his family if this happens.
I'll admit there's a lot of violence that guns can cause, but there's a lot of it they prevent and stop.
Our fore fathers might not have predicted the guns such as the AK-47, but the fact that they allowed it was a much better idea than if they tried to remove that right.