Unfortunately, medicine has gone to hell, at least in the U.S. it has...this type of thinking is entrenched in the culture. It's very superficial and dumbed down these days-if A do B; as opposed to-if A and B and C, do D despite E and F. Critical thinking is considered 'old school'.

Also, there are lazy doctors out there but also much apathy in general. Good on you for researching on your own.