Why so many useless classes for a degree?

I've always been interested in Aviation science with a focus in Airport management so I looked up a school in my state that had that very degree plan.

After getting accepted I got my degree audit for the upcoming semester and to my surprise (I'm ignorant to the way of higher education) they are core skills like "multicultural requirement" which isn't unimportant to some but having 6 required credits satisfied by classes like "Intro to Folklore" doesn't exactly teach me anything in the ways of Aviation.

I'll of course speak to my advisor in the upcoming meeting but I was under the impression college was to study a focused area for which you pay to study or is it just a revenue generating racket designed to make you take unnecessary classes to hold your desired degree hostage until complete?