I play a ton of golf and injured my back a long time ago on a driver swing, separated a disc or whatever as is pretty common. When it happened I could barely walk. On average for the next few years I'd have 2 to 4 serious episodes where I'd be doing something completely normal and my back would go out. Again, not that uncommon, but it was brutal. Couldn't walk down a flight of stairs for 3 days, took 5-7 before i was normal again. Before and after an episode I'd be 100% fine, and I mean playing legit basketball for hours, walking 36 holes, etc...
Finally I got sick of it and went to one of the best back specialists in the DC area. Tons of tests, MRI's, X-rays, etc. Time consuming and expensive and the outcome was basically "do whatever you can to avoid surgery" and "good luck with the pain management, here's a shit ton of pills you can get hooked on." I was already working out like crazy and doing all kinds of PT.
Against every instinct I had and up against plenty of advice like the quackery stuff in this thread, I researched a very good Chiropractor near me and went. It was right after I threw my back out again before a huge golf tournament. 2 adjustments shortened my typical recovery time drastically and I played the tourney with zero pain.
I've kept going monthly since then. I don't give a shit what people say - I'm about to hit 5 years without a single serious episode. I've missed exactly zero basketball games, golf rounds, ski trips, etc since starting. When something does feel a little screwed up it's been minor and an adjustment clears it up in a day or two.
I'm sure there are shitty chiropractors just like there are shitty doctors. It's easy if you haven't experienced what a bad disc feels like to write them off as bullshit, but from a purely outcome-focused experience on my end it has been pretty much life changing. Each to their own, but I know a few guys with similar stories to mine that influenced me into trying it. It's not a replacement for working out or seeing a doctor, but I wouldn't write it off.