Answer: The use of attractive people in advertisements is for the purpose of promoting what they are looking to sell.
In the case of movies, the benefit is also sought, that is, more people will watch a movie if the actor who plays it is physically attractive.
In fairy tales it is sought to show the good as beautiful and the bad as ugly, it is easy for children to understand.
Getting familiar with unattractive people, paying attention to characteristics in common, and developing good relationships are some suggestions of how unattractive people can feel more positive.