Opening the door for a lady is not optional, and will never go out of style.
When I open doors for ladies, good women, it shows that I respect them. That I feel that daunting on them is not a burden, but a pleasure.
Opening the door for a lady speaks most about me and my character, and thus it’s engrained in me and will never be optional (always mandatory).
… Am I thankful it’ll never go out of style.