The number of people who are capable of judging the competence of doctors is dwarfed by the number of people who believe in quackery. We have a very real problem of people feeding their autistic children bleach in the belief that it will cure them ("miracle mineral solution"). Regulations inconvenience people like you and me, but they save a lot of people who need to be protected from the consequences of their own poor decision-making abilities. I consider that a worthwhile trade-off.