Writing is and can be a most intimate work, and vehicle why which we do seek to change the world–no matter how large it may be.
The question really becomes is what do you want to change, and why? Once you answer that, there then comes the cascade:
Will this change be personal?
Will this change provoke other change?
Do you want this change to be sustainable?
The conveying of ideas has always sparked, forced, or moved cultures, greater society towards change. Writers and artists–those weird people who see the world behind the world–are the perfect leaders to provoke it.
The question then becomes: are you that brave enough to begin a dialogue which may have someone wind up quoting you?