Its because its easy to look at a person and dismiss them.
First judgments are first judgments. Anyone who says they don't walk down the street approving of person A and disapproving of person B immediately after seeing them is a dirty liar.
Now, how FAR you take that initial reaction to someones appearance is what makes you a shallow person or not.
Everyone makes first impressions and judges books by their covers. If not, we'd constantly be walking around trying to be best friends with every single person. Odds are, if a person has a similar style to yours, you're going to be more compatible than a person with a style that is the polar opposite.
Sure its not ALWAYS true, but if we're being realistic, most of the time it is.
