Why so many general education requirements in college?

I was just thinking about all of the years I’ve been in school, changed my major and changed colleges. I know not making up my mind has a lot to do with not being done with school yet, but what about all those darn general ed requirements? Why do I need four different math classes to become a preschool teacher? And what does music and art in the western world have to do with my future career? They say they want you to leave school being a “well rounded” person but I think you should only have to take classes specific to your major. Whats your opinion?