Clutter is the main issue to address here. Some of us have it for sentimental reasons, some due to laziness... Either way it's loosing you valuable space! Don't get me wrong, I'm not referring to those who have serious issues related to hoarding. This is more about the majority that just can't part with heaps of stuff or just don't ever get around to sorting out, and getting rid of things they no longer need.
Trust me when I say you will feel so cleansed after a good cull.