I agree with you 100% on the not basing current law on Wyatt Earp et al.
However, I also agree with the repeal of the ban on handguns in DC, first on the basis of the 2nd Amendment, and secondly on the basis that every person should have a right to protect and defend themselves in their own homes. It isn't the people that are obeying the current law that are the problem in DC - it's the criminals that aren't obeying the laws. I don't see how allowing law abiding citizens to keep a gun in their home is going to result in the crime explosion that DC city officials are now screaming about in response to the court's decision.
Will there be more deaths? Probably, because citizens will now be able to shoot the people that are breaking into their homes and endangering their families.
Let me preface this by saying I'm a gun owner and have had concealed weapons permits in both the state of Texas and the state of Florida. And given the background of the Founding Fathers and their basic distrust of government, I believe there's no magic translation for the 2nd amendment. It means exactly what it says. The militia, or citizen soldier, has a right to bear arms. End of story.
My difference of opinion is that we come up with all sorts of convoluted explanations as to why we need a gun. Our violent crime rate is sky high as compared to those societies in which guns are not so readily available. So gun ownership does have a effect on crime, just not the one we want to think it does.
