On visiting my profile recently I notice the "Autosaved Drafts" and thought I would poke around a bit.
I found out that those drafts, as of May 4 2017 go back to May of 2016. I manually deleted them for a couple months worth but decided that maybe there should be profile setting to set how long to keep such things. I have had zero, none, nadda, reasons to recover draft post text going back more than one or two weeks.
Perhaps removing some of this might free up disk or memory for forum performance.
I did spend a little time poking around the profile options in case I had missed a feature for controlling the duration such things were saved but did not find one.
Note that I see this was just autosaved. I likely wont need to reference that autosave after I post this.