Really? Why do we have an appendix/ caecum still if we don’t use it anymore? Every mammal has a foreskin, that doesn’t make it vital or necessary for humans, the same as the appendix or caecum.

Really? Why do we have an appendix/ caecum still if we don’t use it anymore? Every mammal has a foreskin, that doesn’t make it viral or necessary for humans, the same as the appendix or caecum.