what is my purpose in writing?

In the Norton Field Guide to Writing book they say that all writing has purpose. I completely agree. In my opinion when someone is writing something they are trying to get a point across to the audience who is reading the writing. There are other instances in which someone might write to explore thoughts and emotions with oneself for therapeutic reasons or maybe even as an art to express themselves. Whatever the purpose may be, everyone has one when writing.
Now to answer my own question. My purpose in writing changes from one paper to another. I could be simply writing a letter to friend to express my feelings, writing a persuasive paper for a class to get a point of mine across, or even just texting a friend to say hello. No matter what type of writing i am doing i always have a purpose behind it.
Writing will always have a purpose no matter what you have to say. In conclusion as i write and read in the years to come i will no longer think of a writing as just words on a paper but as something that has meaning and a purpose to the writer.