@afewbugs@mhoye They keep snot from dripping out of your nose. Seriously. Ask me how I know. (The snot is *also* there for a reason: it traps viruses and bacteria entering your nose and helps you get sick less often.)
@jik@afewbugs@mhoye ALSO, by pulling nose hairs you can give yourself an ingrown hair that grows from the inside out, attempting to pierce your nose. It's painful and looks disgusting!