There have been recent reports and scientific studies that in fact the appendix does have a use. Why not remove the gallbladder (At least 10% of adults get stones in their gallbladder) at the same time to ensure against future issues? Is the limit a 5% chance of a problem? What other physiological issues have a 5% chance or greater of occurring and do we use surgery to eliminate that chance? What about tooth aches? Are you doing anything preventative such as extractions?