One of the reasons someone should attend Ai, is if someone didn't do well in high school because they were paying too much attention on their doodles or only had a interest in art, and wanted to take their creativity farther, should attend The Art Institute or any art school.
Another reason, is to become better at what interests someone in any art field, and make it something worth while. Make a living out of it. If you're good at something, never do it for free.
Lastly, the reason to attend Ai, is that no ones idea of creativity is disregarded, its just critiqued and given other ideas to make it better or to expand their imagination. Art is something special, it's moving, and its flat out beautiful. Whether its the way someone puts a piece of chicken on a plate and drizzles gravy over it, to a oil painting on a canvas, to the design inside of a house. It's everywhere, and it will never go out of style. This world needs more people with an imagination, and if someone sits in a math class and rather be painting or taking pictures than learning formulas, then I highly suggest they take up on it. And it all starts, at a school, that takes in people like that, and takes them places no one thought anyone could.