The average nostril is roughly the same circumference as your index finger. This can be for one reason only: booger picking.  Coincidence?  You be the judge.

Analyze people’s finger sizes sometime.  People with small fingers have, get this, small noses.  People with big fingers have, you guessed it, big noses.  It’s just like they say about guys with big hands and big feet.  They wear big gloves and big shoes.