Another thing that you should consider is that if the Courts didn't decide on the Constitutionality of things then this country would be far different than it is today. Including the fact that there would still be miscegenation laws on the books. You also would have absolutely no say and no form of recourse when the legislatures enact laws that would infringe on your rights. How would you like it if the States were allowed to allow Islamic prayers in schools but banned Christianity? How would you react if a State banned all guns? How would you react if States did away with jury trials?
You see, in the beginning the BoR's only applied to the Federal Government. Not any of the States. You would essentially have NO rights if the Courts didn't do what they do.