If I could get away with it, something like 80% of my stories would be dialog.
But then people keep telling me they want things like settings, gestures, action, and some non-conversation centered plot.
More seriously, I've noticed there are two basic kinds of writers, those who process their stories as a series of images that need to be translated into words, and those who understand their stories as a series of words that need images. I'm one of the later.