Also rudeness. Playing “hot or not” with every person that crosses your path is considered in poor taste. It objectifies and commodifies them, reducing them to visual spectacles in a way that can quickly become mean-spirited and oafish.

Also, depending on who your oogling, it can get creepy. Fixating on a particular age range or certain ethnic features (even unintentionally) is problematic for a whole host of reasons.