I think doctors are a funny bunch. They hate chiros because they aren't "real" doctors, yet, look at the course work for chiros and they have far more schooling in the human body than doctors.
BTW, I once had a serious injury from a dirt bik racing accident. I had a 30 degree rotation of the lower spine. Every "doctor" out there wanted to do surgery. Quacks. The chiro did x-rays, felt around, and rotated it all back into position instantly. Six months of therapy and my back was perfect. No long term problems, no surgery. The total cost was less than $500 out of pocket.
Doctors just hate the cheaper and more effective competition.
Half the proponents of chiropractic say this. The other half are busy citing examples of chipropractic-alleopathic cooperation. Read this threat and you will find both.
Personally, I think that the allopathic profession, at its best, stands for evidence based empirical medicine, in the same way that the US in 1800 stood for liberty. Empiricism, like liberty, is an ideal to be striven for even though we will always debate what it teaches us and we might be far from reaching it. Allopaths who believe in what their profession stands for are constantly changing what they do as new and better evidence comes in, even if it goes 100% against prevailing wisdom. A few studies can thus wipe out an entire subspecialty, as happenned to surgical TB treatment in 1950. By contrast, chiropractors who believe in what their profession stands for believe that the cause of all disease -- misalignment of the spine -- was discovered once and for all times by Dr. Daniel David Palmer of Davenport Iowa in 1895. What they chiropractors do can, maybe, be changed a bit at the edges by research, but if a chiropractor is really open-minded about giving his patients the best possible care, he is quite simply a traitor to everything he was taught of his profession.
Do the alleopaths always live up to what their profession stands for? NO! And that is precisely why I have a lot of respect for the small minority of FSU alleopaths willing to give up some of their income for their principles.