I hope the real driver among us agrees, but it is my opinion that even if it is not a requirement in your state to possess a CDL, that you make the effort and get one.
First, it will help any driver to develop a better understanding of our air brake systems. Second, it will likely have a favorable impact on your insurance rates if you use a company like Interstate. Finally, by taking the written and driving tests you are proving to yourself and the world that you take the responsibility of driving one of these coaches seriously.
We all have seen some folks that clearly should not even be driving a Class C and we need to set an example.