"I've been seeing a chiropractor for 30 years and have always felt better after a treatment and never worse. "
That may be your observation. Patients who receive massage therapy also "feel good"
after treatment. The problem is the lack of evidence that it treats almost every ailment (diabetes, ear infections etc) that is commonly claimed.
and of course, many others DO NOT perceive any benefit
"The reason why chiropractic will always be around and have loyal patients is because it works...that simple."
Actually, it's obviously not that simple - or it wouldn't be so controversial, lacking in definiton of what Chiropractic is, it's scope of practise and treatment, etc.....