Lots of people have this kind of experience. If you did a survey asking people whether chiropractors are useful for musculoskeletal problems, you would get a strong response that yes they are. But self reported experience, even through a broad survey is not evidence because people can't be trusted to accurately report what they feel.

I personally think the problem is that the practice has over-medicalized what it does, and medicine does indeed require a high burden of objective evidence, which they can't meet. But there are plenty of things that people do where "do people like it?" and "is it safe enough?" are high enough bars.

I do think the question of "is it safe enough?" is the interesting one with respect to chiropractic adjustments, and I wish that were better separated from the (in my opinion) more tedious debate about whether it is generally BS.