Good and bad in everything. Let's face it, there are a ton of bad MD's out there that destroy people's lives all the time because of their incompetency. Chiropractors go through a ton of schooling, too.
Very much depends on luck. My sis-in-law told me, we must go the best and well known doctor/surgeon. But then, there was this very well known, best heart surgeon here, had a patient that died in his hand during surgery and the family sued him. No matter how well known or experienced, there are still risks, accidents, mistakes.
Anyway, I went to a chiropractor many years ago and the chiropractor discovered a dislodged shoulder blade, fixed it and within just seconds, my pain gone and its was gone immediately. It was also through this chiropractor, I discovered I have slip disc on my lumbar and neck area. He had also corrected my so-called slanted body.
I stopped going since, eh...not cos he's no good, but more cos, problem settled, no need to spend that kinda money, lol. He is sooo expensive.