When would you consider long-term suppressive antibiotic therapy in patients with chronic or recurrent bacterial prostatitis who continue to experience symptoms despite multiple courses of antibiotics?  

I think this would depend on the organism to be honest. First, I would make sure the patient is seen by urology and evaluated for possible structural reasons for recurrent or chronic prostatitis. If there are no structural issues that can be rectified, I would consider a prolonged course of therapy ...