Well I consider that I have a "Professional" Pilot's Licence.
Professional means doing things in a professional, safe and legal manor. I will not allow my standards to be compromised by unscrupulous operations let alone other pilots that will.
I have seen it many times in GA.... "If we fly this last sector we will exceed duty times by a mile beyond disgression. Yes but they are offering us cash to do it and we can fiddle the figures later!" I wonder sometimes if I stand alone, I hope not.