Fair point. I thought it would be fun to compare the mortality rate with an issue with another organ that has slim chance of going away: the pancreas. It looks like the appendix is more-or-less a trouble-free organ in comparison. I wouldn't place any bets on the emergence of an appendix-free homo sapien offshoot any time soon.

http://www.wolframalpha.com/input/?i=pancreas+cancer http://www.wolframalpha.com/input/?i=appendicitis