I think this depends on the kind of chiropractic work. If they are just there to pop bubbles for that crack, then nothing is happening. I got into a car accident and my insurance sent me to a chiropractor that never cracked my back. Instead he gave me physical therapy, got me MRI images to check for an cracks on my spine or hernias in my discs, and gave me some equipment to help relax my back muscles and provide support to my bacl. I feel like this kind of work actually does provide benefit. I don’t go anymore since all of that stuff is cleared up now, but I would trust that guy with my back again if I needed it.