I Feel Used

Today my father sent me to the king. He said it would benefit him and our family if I became a wife of the king. They knew and I knew that the king had only one use for me in mind and that was being a prostitute. My father said it was a privilege because the king only chose the prettiest woman. Still I felt used and like my family only wanted me to do this for them. I know we can't disobey the king, but I'm still confused on why my family treated me like this.