If you carry as a 2nd Amendment right, but a state says no you can't carry here, but you do anyway, and you find yourself in need of defending yourself, and you shoot and kill someone, the worst fate will be that you will be convicted of concealed carry. Very wrong, but the few states that have chosen to ignore the 2nd, will charge and try and convict you. That's okay. It's better to be convicted of carrying where you ain't supposed to be carrying than to be dead.
I don't suggest you break the law. I say don't go to those places where you are not allowed to carry. The bad part is, those places are increasing. Soon enough, most of the states will say no carrying. I'm glad I'm old and won't have to suffer that. But even if I were not old, I would not driving around without a gun. I'm not crossing state lines without a gun. For now, I'll just be careful to avoid those Obamanite locations.