Seriously I am lucky and have never in my life had back issues.
I think it would be a difficult delimma for me if I needed one. I'd probably just go to a physical trainer or massage therapist. Fortunately I am Mighty!
I knows lots of people who go to back crackers regularly...and thus point.
This would be the same as you saying that Carpet Cleaners are all Snake Oil Salesmen without ever even having your own home cleaned, but only going off of the opinion of some friends who might have all used Stanley Steam or any number of hacks out there.
Chiropractors are like any other industry, there's good ones, there's bad ones and then every once in a while there's a GREAT ONE. I happen to be fortunate enough to have found a great one. I can't tell you how many of my friends and family that I've recommended to mine and have only received gratitude from them for the referral! Most people don't understand how many functions our spines are responsible for controlling. I'm more of a "Treat The Problem" kinda guy, not a "Treat The Symptom".