If you say you don't do this, you would be a big fat liar. If you think appearances and first impressions are not important you've got a lot to learn about life. Sure it is not fair, sure we all think we are above this, sure it's superficial, but it shapes what doors open up for people, who they date, where they work, how they get initially treated. What shapes your first impressions on people? When have your first impressions ever been wrong?