A group of Duke University Medical School surgeons and immunologists propose that the appendix may serve as a safe-house for bacteria. So apparently your appendix serves to cater to bacteria. Yes Mr. Bacteria! No Mr. Bacteria! You aren't special. Your body is specially made to cater to bacteria.
Though, grains of salt. These are doctors not evolutionary biologists. Though, lets not poke too much fun at doctors, but they are doctors after all. In summation: Doctors, *eye roll*.