Hmmm
A pro is someone you pay, and because they are paid you expect a level of service and results. The more you pay, the more you EXPECT to get in return.
Service, standards, ethics, morality...all vary...especially in aviation. If there was really any kind of a standard, a higher bar or litmus that was actualy trying to be achieved in this industry then we wouldn't be employing 350 hour FOs in our airliners, or typing 1000 hour captains in GIVs. Enough said.
A volunteer is a 'get what you pay for type of thing'