Stories that you find yourself inherently motivated to develop and write are at some level purer than stories that you write for specific audiences to convey some message, which could cynically be considered some form of propaganda.

I realise that word has negative connotations, especially among folks who aren't enamored with the most famous propagandists, fiat governments; however, when thinking through my own disorganized heap of leftover ideas from the years since first "leaving home", I've found that my internal critic is much better organised when I think of any potential literary effort as on some level being propaganda that delivers some message to an audience.