Take the case of the ogre who attempted to join a high school in Torrance. When the teacher called on the new kid - obviously a football player - to answer a question about Othello he was stumped. Ogres are not the sharpest tools in the shed. Unfortunately, his response was to start chewing on the chair in front of him out of frustration and embarrassment. Sadly, it was occupied by a rather popular cheerleader.
So what is the reason for such risky trials? What could humans possibly have that would fascinate Supers? Well, aside from their general tastiness, humans are very unpredictable creatures. They are exceedingly illogical and highly emotional, which consequently makes them extremely fun to interact with.
Then there's the simple challenge involved. Think about Halloween and how much fun it is to dress up in costume and pretend to be someone you are not. Many are attracted to theater for much the same reasons. So it is for Supers. They like to pretend too. It's always more exciting to be someone you are not.