The same threat to individuals that existed then, exists now. I mean it is still possible your home will be broke into and there are still people getting raped and killed. :P
And the ruling from the Supreme Court ( Heller case ) said the 2nd amendment can be used as a right for a individual for self defense apart from the militia. So you see. The Supreme Court's opinion is the most important opinion, because it is the one which gives us the right to exercise our rights if they are challenged. :P
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Not a very comprehensive one. Not a full physical I mean. They check your eyes and also to see if you have any special needs from a handicap.
So the poor can not exercise their Constitutional right?