When I was at school I was taught that the appendix didn't really have a function these days - that it was just a vestigial organ. Maybe you were taught that too. - But there is another theory now: that the appendix provides a 'safe house' where healthy gut flora are stored as a reserve cache to repopulate the gut if it gets infected and diarrhoea empties it. - Isn't the body a marvellous, intricate wonder?
See the diagram and explanation on Wikipedia.
I urge you to safeguard the health of your amazing, complex body by eating good, nutritious, natural food instead of processed, adulterated, over-salted, sub-standard fodder and diet junk.