I don’t want to deal with files and directories anymore.
A few weeks ago I bought IA Writer for Mac (thanks Stephan!) — the most basic text editor one could imagine. Its goal is to facilitate distraction-free writing. Before being turned into a Mac app, it was a successful application on the iPad.
As you are likely aware, iOS apps don’t expose file systems. When you open an app like IA Writer you can immediately start typing, either in a previously created document or a new one.