The reason this book has been historically banned are atrocious.  This is a classic story of a princess who saves not just herself, but the prince as well.  The problem, for this reader, is that the prince is a narcissistic A55#013 who can not see beyond the vain.  He tells the princess, who just saved him, that a paper bag is a horrible thing to wear and to come back when better dressed.  As a woman, I stand behind this princess kicking that horrible prince to the curb.  And that is why this book is banned.  I thought it would be for the nearly naked illustration, but no, because it subverts gender norms.  Because the princess is the savior, and wont kowtow to the prince.  UGGGHHH.  I love this book.  This book should not be banned, it should be celebrated.  It is a classic for a reason and will be loved by generations to come.