And how many (thousands upon thousands) of laws have been found to be unconstitutional? And were they found to be unconstitutional because everyone followed them without question? Or were they found to be unconstitutional because the quite-often, too-long, arm of the law was imposed upon someone who appealed their fine, conviction, etc and their cause was elevated thru the courts?
Again, if you think it makes sense for the law to tell you to stand back and let some armed intruder do whatever they're capable before the law gets there, that's your business.
Again, "... the right of the people to keep and bear Arms, shall not be infringed."