I have never really thought about this before, but now that I have I see the importance in it. Many others (including myself) have a plain writing style that no one has challenged or tried to improve.
Through my writing experience I have realized my plain writing style has come from years of hearing how to write, but not with voice. If every time I wrote I tried to improve the voice in my paper it would better my writing style and capture the audience. Why should anyone want to read my writing if I didn't care about improving my writing style. If I do not start examining my writing style and improving it I would not become the best writer I could be.
Those who choose to keep their current writing style will never realize the potential they have in writing and are hurting themselves in the long run.It gives one a good feeling when they know they have turned in a paper in which they have improved their writing style.