Just read an article from The New York Times entitled The Unbearable Heaviness of Clutter.
The last paragraph sums up what I have been clamouring about all these years:
Dr. Saxbe agreed that a good way to declutter is to keep items out of the house in the first place. She urged shoppers to consider whether they truly need an item or if it will add to their home’s sense of dysfunction. “Once it’s in the house, it’s really hard to deal with. You get attached to the things you own,” she said.