Is your objective to treat the patient's pain, restore motion or eradicate subluxations? If so, that's the practice of medicine. This is a distinction lost on patients, ignored by insurance companies, missed by licensing bodies and overlooked by many chiropractors.
So, it's no surprise that those chiropractors who haven't made this distinction often have a constant need for new patients.
If you've found yourself in the business of "fixing" spines or relieving aches and pains (what patients want) rather than helping invoke their inborn ability to self-heal (and explaining the difference), it's only natural to expect patients to leave when their symptoms are gone. After all, they think you're a back doctor.
Thus, the notion of regularly seeing a chiropractor to be their best for the rest of their lives to maximize their well-being or enhance their ability to accommodate the stresses of daily living seem like a needless and expensive self-indulgent luxury!