Those are great benefits to taking a marketing class. But even if you aren't in business, bear in mind that we are always marketing ourselves. I teach marketing classes, sometimes to non-business majors, and that is a point I always like to make. When you put together a cover letter and résumé and go on an interview, you are marketing yourself. You have to do research on the market you are aiming for and position and "package" yourself. We are always marketing in some way or another.