Editing audio, you accumulate so much cruft it is amazing. Out-takes, duplicates, alternative mixes etc etc. You pretend you might come back to them. But you don't. Eventually you decide to save only the final mix and the sound files it needs, and you spend about 90 minutes doing every podcast from 2014, and you reduce the size of that archive from 21.3GB to 9.1GB and that is a good thing.

2015 can wait.