Change the surroundings.
There are plenty of reasons why you might want to resample to audio in your music productions. Perhaps you're working with CPU hungry plug-ins. Or you'd like to commit MIDI to audio to use audio specific features like warping, reversing,
Once you've finished a project, whether it's one track, an EP or a full album, you should always make sure you will be able to access the files in the future. Not just within the next few months, but years