A polite and courteous act also shows respect to others.
A study of a common courtesy – holding the door for someone – suggests that this act may have a more practical, though unconscious, shared motivation: to reduce the work of those involved. Dr Rosenbaum of Pennsylvania University says, “here are people who will never see each other again, and this fleeting interaction (opening the door), reduces each others’ effort.”
This small gesture is uplifting for society.
At the end of the day, the old adage still holds true: treat people as you would like to be treated.