The pot-making comment made me feel I should respond...I get criticized all the time when people ask what I went to school for and I tell them my degree is a BFA in creative writing. A lot of people think that's a waste of time. A friend's mother even said "so...you basically just wasted four years of your life?" What people don't understand is that it's essentially an English degree with an emphasis on writing/communication, the latter part which is actually pretty essential in a lot of professions.
I can apply what I have learned and my experiences through my classes and extracurriculars to a lot of different fields, including law enforement. An eye for details, the ability to remember those details accurately, and all of the basic written skills of grammar, puntuation, organization and the like are all pretty important, especially in writing reports. Because I spent the entire time I was in school (and am still currently) working in customer service, I have developed good interpersonal skills, and communication on that level as well.
"Useless" as it may appear to some people, my degree was actually one of the things that impressed a potential employer the most. I hadn't even directly applied to them but to a position elsewhere in their company, but a hiring manager came by my resume and cover letter. She was impressed that I've worked so long in customer service and had a degree in writing, so she knew that I could handle talking to people all day, the conflict resolution required of the job she had open, and all of the written corresponsdence that it would require, and asked me to come in for an interview.
I have a friend who is a theater major and was considering switching because of the impractability factor. Then I ran across someone's post to someone else doing the same thing that pointed out a theater major could say in an interview that they can contribute to large group projects, work to hard-wired deadlines, lead a group of others, have excellent presentation and communication skills, etc. There are all kinds of skills that tie in to anything that you choose to do with your life. Whether you are in hands on art, writing, theater, or any number of other things that the general public would deem "useless" or "impractical" you'll learn something. Do what you want to the most, and figure out what you are learning and how to market it toward the career you want.
We must all fear evil men. But there is another kind of evil which we must fear most, and that is the indifference of good men.
-Monsignor, Boondock Saints