This is what a computer should be doing: helping the user to get their work done, without the user having to worry about insignificant details about saving files. E.g. does Google Docs ever ask where to save a file before closing the browser or shutting down the computer? No you just get an untitled document that is automatically saved. If I want to rename it or save it in a different location, I am free to do so. But as long as I don't, it doesn't get in the way and just persists stuff automatically.