Do you need a college education to become a writer?

Recently I wrote a blog about the long ridge writer's group, but something else has been on my mind recently, college writing courses. I am currently in college studying liberal arts. I've taken a few writing classes along the way and know that I have many more to take along the way, but do I need these classes? To go into my chosen profession I will, but to be an actual writer I will not. While my dream is to be a writer, I have chosen to go to school and study journalism. Both jobs involve writing, but I only need a degree for one. I don't believe you need to go to college to write a book, as long as you know enough about grammar and spelling and you have natural talent. There are lots of authors who didn't go to college, some of which have made their way to the best seller's list. The few college classes on writing that I did take only served to heighten my confidence. There was one class I took where the teacher had us read boring short stories instead of writing. I honestly don't think that class helped me at all. College writing classes may help some, but you don't have to attend them to write a book. It's easier now with self publishing.