Reason can come and go. That's the problematic part with clutter. Something may have lost it's purpose for now, but someday in the future a new purpose can appe

Reason can come and go. That's the problematic part with clutter. Something may have lost it's purpose for now, but someday in the future a new purpose can appear and then it's not clutter anymore. Instead of comparing that 3rd room with a cache, I would call it an archive, a bank for items or just your "uselater"-room, where you collect items similar to how people collect bookmarks which they plan to readlater. The relevant part is that clutter should not stand in your way, hinder you in your progress. Thus it must stored away and trimmed down from time to time if space is raching it's capacity. But besides that? If you have the space, who cares. As long as it's out of the way it's not a hindrace.