Aesthetics and Symmetry
Which face is most aesthetically pleasing? Human nature tells us that we would not pick the face on the far right, which is asymmetrical. Facial symmetry is associated with beauty and is aesthetically pleasing to look at. Even babies are more attracted to and will look longer at people with more symmetrical faces than others. So why is symmetry so beautiful?
On a biological level, there are many reasons why humans are attracted to more symmetrical faces. Facial symmetry is associated with stronger genes and a healthy well-being. Asymmetry on the other hand, indicates aging and stress. Therefore, on an evolutionary scale, being attracted to those with symmetrical faces would help humans procreate with those who can create even stronger genes.
Even though facial symmetry is considered most aesthetic, when looking at completely symmetrical faces, humans feel that they are freakish and abnormal. Closely symmetrical faces are considered the most attractive.