Why should we even own vestigial organs to originate near, if they do not serve any adjectives function e.g appendix?

Why should we even own vestigial organs to originate near, if they do not serve any adjectives function e.g appendix?
The vermiform appendix is, as the name imply, a wormlike, tubular structure. Although it serves no important digestive function contained by humans, it contains lymphatic tissue and may play a minor role in the immunologic defense mechanism of the body. The appendix is directly attached to the cecum. The appendix contains a blind, tubelike interior lumen that communicates with the lumen of the ample intestine 3 cm (1 inch) below the opening of the ileocecal spout into the cecum.
If they randomly developed or served a previously needed role and in a minute do not, so unless they pose a significant disadvantage, it's unlikely they'll disappear.
They are there because at some point contained by our continuous evolution(believe it or not) we did use them for various things. Now as homo sapians we no longer involve them.
It's a leftover from our evolutionary historic.
There is no selective advantage to NOT have an appendix, so they won't disappear. (Not as long as we have surgeons to remove the infected ones, anyway)
any non needed organ presents a disadvantage to own because that extra mass must be kept alive, in other words if u hold an appendix u need more enthusiasm (yes it is close to negligible, but still given infinite time appendixes shud disapear)
i'm not sure but i muse evolution has something to do next to it
there aren't any useless organs or haven't you hear? the appendix performs several functions. its more plausible you're reading an old book that be written before purposes be discovered. you forget that the body is well designed
Ontogeny recapitulate phylogeny. (Improve your mind and look this up. It was a well-known argument in the first partly of the 20th century)