I live in Missouri and the signs do not have the force of law. The signs also have to be displayed in a very specific way (overall size, letter size) to carry any weight at all. If the establishment is posted and they know you are carrying they can ask you to leave. If you do not leave they can have the police ask you to leave. After the second incident I believe you are fined. After the third incident your CCW is taken from you. I don't know the rules for open carry.
I do carry in posted establishments but it is not to prove anything and my gun is always concealed. Carrying is just something I do now after all of these years. I really have to make an effort to remember to leave my gun in the car when I go into a government building of some kind because that is against the law and I do follow it.
So, if carrying in a posted establishment makes me some kind of moral degenerate then so be it.
I do carry in posted establishments but it is not to prove anything and my gun is always concealed. Carrying is just something I do now after all of these years. I really have to make an effort to remember to leave my gun in the car when I go into a government building of some kind because that is against the law and I do follow it.
So, if carrying in a posted establishment makes me some kind of moral degenerate then so be it.