It seems like you don't have that much experience with real world doctors. Lots of highly educated doctors become complete crackpots who you'd not want to be putting a band-aid on you. Dr. Oz is one such very high profile example (see https://en.wikipedia.org/wiki/Mehmet_Oz#Reception) but there's lots more. I've had experiences with much less famous doctors that got all the proper education but then later lost their minds and/or decided to just make as much cash as possible. Really really common. I have trust in the field of medicine but in specific doctors just because they have their medical degree? no way.