The contents of the Untouchables folder are either old, ugly, embarrassing, or stuff that would probably be better off deleted. However, I've often seen favorite artists/writers delete their work for these same reasons, apparently not considering that some people thought that even their ugliest work was wonderful.
Consequently, I'm leaving most of my old junk in this folder so that people who want to look at them can look at them, while those who don't can just click the back button.
Or go..