There are a lot of reasons for why it is hard to toss our excess stuff, that I have discussed in this blog. For example, there’s clutter from the past that holds sentimental value and there’s clutter for the future that we might need “someday.” Today, however, I want to share a new theory on why we keep clutter, that I don’t believe has ever been addressed before. I call it the check register theory. Here it is.